Build kotlin code using sbt

Current version 2.0.0

• for sbt 1.0.0+ addSbtPlugin("com.hanhuy.sbt" % "kotlin-plugin" % "2.0.0")
• for sbt 0.13.x addSbtPlugin("com.hanhuy.sbt" % "kotlin-plugin" % "1.0.9")
• Kotlin code will build automatically from src/XXX/kotlin
• If necessary, add kotlinLib("stdlib"), it is not included by default.
  • Loading standard kotlin libraries and plugins: use kotlinLib(NAME) as above to load standard kotlin modules provided by JetBrains. For JetBrains kotlin compiler plugins, use kotlinPlugin(NAME) (e.g. kotlinPlugin("android-extensions")). The difference is that the latter marks the module as a compile-internal dependency and will be excluded from the final build product.
  • Any other libraries can be loaded using the normal libraryDependencies mechanism. Compiler plugins should be added as a normal libraryDependency but specified to be % "compile-internal"
• If a non-standard Classpath key needs to be added to the kotlin compile step, it can be added using the kotlinClasspath(KEY) function
  • For example, to compile with the android platform using android-sdk-plugin: kotlinClasspath(Compile, bootClasspath in Android)

• kotlincPluginOptions: specifies options to pass to kotlin compiler plugins. Use val plugin = KotlinPluginOptions(PLUGINID) and plugin.option(KEY, VALUE) to populate this setting
• kotlinSource: specifies kotlin source directory, defaults to src/main/kotlin and src/test/kotlin
• kotlinVersion: specifies versions of kotlin compiler and libraries to use, defaults to 1.3.41
• kotlinLib(LIB): load a standard kotlin library, for example kotlinLib("stdlib"); the library will utilize the version specified in kotlinVersion plugin
• kotlincOptions: options to pass to the kotlin compiler

• See the test cases for this plugin

• currently requires kotlin 1.1.4+