documentation work. about to do a big move.
big changes to Element. get/set are removed.
Used closeable syntax.
Merge remote-tracking branch 'origin/master'
Add content on IO and GraphML to docs.
Add section for GraphSON.
Add some kryo io text to docs.
Add Graph Strategy section.
Add more imports.
inV(), outV(), bothV()... bam. Everything is Gremlin.
fixed up my section of the docs with new Element API.
First, primitive GremlinKryo input/output format
Merge branch 'master' of github.com:tinkerpop/tinkerpop3
Add options to generate a modern/classic graphs into an existing graph.
Add scripts to generate classic/modern graph into empty gremlin server graphs.
Add Gremlin Server docs.
Clean up toString() of StrategyWrapped classes.
Forgot to add this class on the last commit.
Move DoNothingGraphStrategy to GraphStrategy interface.
ReadOnlyGraphStrategy wasn't working.

Corrected that and got tests to pass.  Corrected other minor bits along the way.