Add more scaladoc comments

Author: dwins

geoscript/src/main/scala/feature/Feature.scala

@@ -3,6 +3,9 @@ package org.geoscript //.feature
 import org.geoscript.projection._
 import scala.collection.JavaConverters._
 
+/**
+ * Facilities for manipulating vector data.
+ */
 package object feature {
   /**
    * A Feature is a single entry in a geospatial dataset.  For example, a

geoscript/src/main/scala/filter/Filter.scala

@@ -1,11 +1,6 @@
 package org.geoscript.filter
 
 import scala.collection.JavaConverters._
-
-import com.vividsolutions.jts.{geom=>jts}
-import org.{geotools => gt}
-import org.opengis.{filter => ogc}
-
 import org.geoscript.geometry.Geometry
 
 object Filter {

geoscript/src/main/scala/filter/filter.scala

@@ -2,10 +2,14 @@ package org.geoscript
 
 import scala.collection.JavaConverters._
 
+/**
+ * Manipulate filters and expressions
+ */
 package object filter {
   type Filter = org.opengis.filter.Filter
   type Expression = org.opengis.filter.expression.Expression
   val Include = org.opengis.filter.Filter.INCLUDE
+  val Exclude = org.opengis.filter.Filter.INCLUDE
   val factory = org.geotools.factory.CommonFactoryFinder.getFilterFactory2()
 
   def literal(x: Double): Expression = factory.literal(x)

geoscript/src/main/scala/geometry/package.scala

@@ -1,4 +1,7 @@
 package org.geoscript
+/**
+ * Manipulate geometries
+ */
 package object geometry {
   import com.vividsolutions.jts.{geom => jts}
 

geoscript/src/main/scala/io/io.scala

@@ -0,0 +1,6 @@
+package org.geoscript
+
+/**
+ * Common types for serialization and deserialization
+ */
+package object io