Merge pull request #29 from JonPSmith/master

Added Nullable Tests
Adds calls to AdjustedBinaryExpression for all binary expressions in the Processor along with associated tests.
Added support for EF 6 via an alternate Decompile() extension that returns async implementing proxies.
Update .gitignore
Add some optimizations

Conflicts:
	src/DelegateDecompiler.EfTests/GeneratedDocumentation/DetailedListOfSupportedCommands.md
	src/DelegateDecompiler.EfTests/GeneratedDocumentation/DetailedListOfSupportedCommandsWithSQL.md
	src/DelegateDecompiler.EfTests/GeneratedDocumentation/SummaryOfSupportedCommands.md
Updates test result markdown after running all EF tests and fixes copyright and version in DelegateDecompiler.EntityFramework to match DelegateDecompiler.
Merge branch 'gh-31'
Switch to NUnit
Fix nullable operations #28
Set version 0.12.0
Update nuget
Remove remaining xunit references
Build EF package
Update README.md
Update README.md