Mark the parser generator NuGet packages as development dependencies.

This way when you generate packages from projects using the parser generator, NuGet won't try to also reference the parser generator as a dependency.
Update nuspec minClientVersion's since we're using features from 2.7
Merge pull request #62 from rharrisxtheta/nuget-package-patch

Mark the parser generator NuGet packages as development dependencies.
Updated .gitignore (profiling results, test results, and Roslyn cache as a directory)
Include Windows Phone 8.1 support in PCL builds
Use unique assembly names for test projects so all tests can be loaded at once
Update NuGet references to the latest release of ANTLR 4
Merge pull request #66 from sharwell/nuget-refs

Update NuGet references to the latest release of ANTLR 4
Merge pull request #65 from sharwell/wpa81

Include Windows Phone 8.1 support in PCL builds
Merge pull request #64 from sharwell/test-project-names

Use unique assembly names for test projects
Merge pull request #63 from sharwell/gitignore

Updated .gitignore
Use signing key instead of assembly name to differentiate targets
Use common configuration for NuGet pack and push instructions
Use WriteErrorLine instead of echo
Add the -NoClean and -VisualStudioVersion flags to build.ps1
Build the Java code as an integral part of build.ps1
Check signing keys as an integral part of the build
Merge pull request #67 from sharwell/build-improvements

Build improvements