Added in Range handling, optimization of ids, and handling of null values in cell ids.
Checked in with better handling of GroovyExpressions when nexted in an Object[]
Added comment for issue in NCube where Object[] aren't being handled correctly in equality comparison
Merge branch 'master' of https://github.com/jdereg/n-cube

Conflicts:
	src/main/java/com/cedarsoftware/ncube/NCube.java
	src/main/java/com/cedarsoftware/ncube/Range.java
	src/test/java/com/cedarsoftware/ncube/TestJsonFormatter.java
Handle cmd.getUrl() and cmd.getValue() on urlCommandCells
Merged in John's Changes
Merge branch 'master' of https://github.com/jdereg/n-cube
Updated test to support existing n-cube types and changed id generation to be #.0 instead of long.  Also, handle id values better when writing out so you don't get missing ids at startup.  Added test.json from existing code.
Fixed ids on default cells being skipped.  Now an empty cell is created if all items are default.  Removed Object[], Collection, and Array since these items cannot be read in (the preferred method is to implement an expression for thos items).  Updated tests for urlcontent.
Merge pull request #8 from kpartlow/master

Please merge.