Fix missing var gremlinLine
Remove logic for select() and _() methods from Gremlin.queryMain()
Remove logic for idx() from Gremlin.queryMain()
Remove calls to Gremlin.queryMain() in Graph class methods
Rename query() methods as append() methods. Remove Pipeline.add().
Update comments for Gremlin.append() and Gremlin.line() methods
Use appendMain() back in Graph class
Switch to one var per line style
Element methods should now properly append script to their bound Gremlin script instance