Chore - Java to Kotlin code conversion

.gitignore

@@ -1,20 +1,196 @@
-# Eclipse
-.classpath
-.project
-.settings/
+###
+# File     : .gitignore
+# License  :
+#   Original   - Copyright (c) 2015 - 2016 Contrast Security
+#   Derivative - Copyright (c) 2016 Citadel Technology Solutions Pte Ltd
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#           http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+###
+
+# Created by https://www.gitignore.io/api/windows,osx,linux,intellij,eclipse,netbeans,maven
+
+### Windows ###
+# Windows image file caches
+Thumbs.db
+ehthumbs.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+
+### OSX ###
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+
+### Linux ###
+*~
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+
+### Intellij ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio
 
-# Intellij
-.idea/
 *.iml
-*.iws
+
+## Directory-based project format:
+.idea/
+# if you remove the above rule, at least ignore the following:
+
+# User-specific stuff:
+# .idea/workspace.xml
+# .idea/tasks.xml
+# .idea/dictionaries
+
+# Sensitive or high-churn files:
+# .idea/dataSources.ids
+# .idea/dataSources.xml
+# .idea/sqlDataSources.xml
+# .idea/dynamic.xml
+# .idea/uiDesigner.xml
+
+# Gradle:
+# .idea/gradle.xml
+# .idea/libraries
+
+# Mongo Explorer plugin:
+# .idea/mongoSettings.xml
+
+## File-based project format:
 *.ipr
+*.iws
+
+## Plugin-specific files:
+
+# IntelliJ
+/out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+
+
+### Eclipse ###
+*.pydevproject
+.metadata
+.gradle
+tmp/
+*.tmp
+*.bak
+*.swp
+*~.nib
+local.properties
+.settings/
+.loadpath
+.cache-main
+.cache-tests
+
+# Eclipse Core
+.project
 
-# Maven
-*.log
+# External tool builders
+.externalToolBuilders/
+
+# Locally stored "Eclipse launch configurations"
+*.launch
+
+# CDT-specific
+.cproject
+
+# JDT-specific (Eclipse Java Development Tools)
+.classpath
+
+# Java annotation processor (APT)
+.factorypath
+
+# PDT-specific
+.buildpath
+
+# sbteclipse plugin
+.target
+
+# TeXlipse plugin
+.texlipse
+
+
+### NetBeans ###
+nbproject/private/
+build/
+nbbuild/
+dist/
+nbdist/
+nbactions.xml
+nb-configuration.xml
+.nb-gradle/
+
+
+### Maven ###
 target/
-output/
-logs/
-bin/
+pom.xml.tag
+pom.xml.releaseBackup
+pom.xml.versionsBackup
+pom.xml.next
+release.properties
+dependency-reduced-pom.xml
+buildNumber.properties
+.mvn/timing.properties
 
-# Mac
-.DS_Store
+
+### Others ###

CONTRIBUTING.md

@@ -0,0 +1,77 @@
+## Submission Guidelines
+
+### Submitting a Pull Request (PR)
+
+Before you submit your PR, consider the following guidelines:
+
+* Ensure your changes is made in a new git branch:
+
+     ``` shell
+     git checkout -b feature/my_feature_branch master
+     ```
+
+* Create your feature or patch, **including appropriate test cases**.
+
+* Run the full test suite and ensure that all tests pass.
+
+* Commit your changes using a descriptive commit message.
+
+     ``` shell
+     git commit -a
+     ```
+  Note: the optional commit `-a` command line option will automatically "add" and "rm" edited files.
+
+* Push your branch to GitHub:
+
+    ``` shell
+    git push origin feature/my_feature_branch
+    ```
+
+* In GitHub web UI, create PR to `cassandra-migration:master`.
+
+* Ask a core team member to review your changes, if changes are suggested then:
+  * Make the required updates.
+  * Re-run the test suites to ensure tests are still passing.
+  * Commit your changes to your branch (e.g. `feature/my_feature_branch`).
+  * Pull latest `master` to check if there has been any further updates, merge (and/or)
+    rebase if necessary (see note below).
+  * Push the changes to your GitHub repository (this will update your PR).
+
+If the PR gets too outdated, you will need to rebase and force push to update the PR:
+
+``` shell
+git rebase master -i
+git push origin feature/my_feature_branch -f
+```
+
+*WARNING. Squashing or reverting commits and forced push thereafter may remove GitHub comments
+on code that were previously made by you and others in your commits.*
+
+#### After Your PR is Merged
+
+After your PR is merged, delete your branch from GitHub (and locally), and pull the changes
+from the main (upstream) repository:
+
+* Delete the remote branch on GitHub either through the GitHub web UI or your local shell as follows:
+
+    ``` shell
+    git push origin --delete feature/my_feature_branch
+    ```
+
+* Check out the master branch:
+
+    ``` shell
+    git checkout master -f
+    ```
+
+* Delete the local branch:
+
+    ``` shell
+    git branch -D feature/my_feature_branch
+    ```
+
+* Update your master with the latest upstream version:
+
+    ``` shell
+    git pull --ff --prune upstream master
+    ```