Added auto-completion of function signatures
addressed merge conflicts
minor refactor
Added unit tests for function signature completion
Added unit tests for CodeCompletionParser
addressed merge conflicts
minor refactor
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into Intellisense
resolved merge conflicts
minor fix
Adding function signature completion - part 4
addressed review comments
Merge pull request #2780 from aparajit-pratap/Intellisense

Cross merge from master to Revit2015 for PR #2688