Added test case documentation
minor variable renaming.
fixed a bug in the docs.
Ensure disabling a metric reporter actually prevents it from reporting.
Merge branch 'master' of github.com:tinkerpop/tinkerpop3
more doc tweaks.
Add private constructor to mockserializable.
Merge remote-tracking branch 'origin/master'
Added no-arg constructor to MockSerializable and removed the identical private static class inside VariablesTest
Merge branch 'master' of https://github.com/tinkerpop/tinkerpop3

Conflicts:
	gremlin-test/src/main/java/com/tinkerpop/gremlin/structure/MockSerializable.java
Convert ids in tests.
Removed PropertyFilterIterator and made TinkerElement and DetachedElement property retriveal more efficient.
Add meta property feature to test #339
Merge remote-tracking branch 'origin/master'
minor memory optimization tweak to FlatMapStep.