Move symbolDisplayPartKind to services side
Removed some unused var statements
Adding union types to language specification
Merge pull request #898 from DickvdBrink/unused-vars2

Removed some unused var statements
Formatting fixes
Adding PDF document
Adding documents with revision marks
Merge pull request #884 from Microsoft/moveSymbolDisplayPartKindToServices

Move symbolDisplayPartKind to services side
Update CONTRIBUTING.md

Add link to pdf version of CLA
Merge pull request #900 from Microsoft/langSpecUnionTypes

Adding Union Types and Type Guards to Language Specification
Merge branch 'master' into rwcRunner