Fixed bad bug given #329.

By using finally, every request had a wait applied to it.  Major slowdowns ensued.  Uncovered via performance tests.
Adjustments to the EngineController to better reset scriptengines. Related to #306

ScriptEngines should not properly reset and reload init scripts on change to rexster.xml.
Update readme.
Fix formatting in changelog.
Add <read-buffer> config to rexster.xml.

Allow for larger request sizes via rexpro.
Add support for REXSTER_HOME when finding rexster.xml #334
Merge branch 'master' of github.com:tinkerpop/rexster into linked-data
Simplified the API change to GraphConfiguration made necessary by LinkedDataSailGraphConfiguration, which expects a reference to a base Graph