Documentation for the properties.

src/main/kotlin/com/beust/kobalt/api/annotation/Annotations.kt

@@ -7,7 +7,8 @@ package com.beust.kobalt.api.annotation
 annotation class Directive
 
 @Retention(AnnotationRetention.RUNTIME)
-annotation class Task(val name: String,
+annotation class Task(
+    val name: String,
     val description: String,
 
     /** Tasks that this task depends on */
@@ -24,11 +25,23 @@ annotation class Task(val name: String,
  * Plugins that export properties should annotate those with this annotation so they can be documented.
  */
 @Retention(AnnotationRetention.RUNTIME)
-annotation class ExportedPluginProperty
+annotation class ExportedPluginProperty(
+    /** Documentation for this property */
+    val doc: String = "",
+
+    /** The type of this property */
+    val type: String = ""
+)
 
 /**
  * Plugins that export properties on the Project instance should annotate those with this annotation so
  * they can be documented.
  */
 @Retention(AnnotationRetention.RUNTIME)
-annotation class ExportedProjectProperty
+annotation class ExportedProjectProperty(
+        /** Documentation for this property */
+        val doc: String = "",
+
+        /** The type of this property */
+        val type: String = ""
+)

src/main/kotlin/com/beust/kobalt/internal/JvmCompilerPlugin.kt

@@ -26,7 +26,7 @@ abstract class JvmCompilerPlugin @Inject constructor(
         open val jvmCompiler: JvmCompiler) : BasePlugin() {
 
     companion object {
-        @ExportedProjectProperty
+        @ExportedProjectProperty(doc = "The location of the build directory", type = "String")
         const val BUILD_DIR = "buildDir"
 
         const val TASK_CLEAN = "clean"

src/main/kotlin/com/beust/kobalt/plugin/packaging/PackagingPlugin.kt

@@ -39,13 +39,14 @@ class PackagingPlugin @Inject constructor(val dependencyManager : DependencyMana
     companion object {
         const val PLUGIN_NAME = "packaging"
 
-        @ExportedProjectProperty
+        @ExportedProjectProperty(doc = "Where the libraries are saved", type = "String")
         const val LIBS_DIR = "libsDir"
 
-        @ExportedProjectProperty
+        @ExportedProjectProperty(doc = "The name of the jar file", type = "String")
         const val JAR_NAME = "jarName"
 
-        @ExportedProjectProperty
+        @ExportedProjectProperty(doc = "The list of packages produced for this project",
+                type = "List<PackageConfig>")
         const val PACKAGES = "packages"
 
         const val TASK_ASSEMBLE: String = "assemble"