FsLex/FxYacc error messages redirected to stderr stream
Parser for FsLex/FsYacc error messages was implemented
Messages from stderr stream redirected to VS error window
Unit tests for error parser were added
Logging refactored + new test added
Versioning of 'FsLexYacc.Runtime' is separated from 'FsLexYacc'
FsYacc verbose output added to MSBuild log
FsYacc documentation is updated
Merge pull request #16 from sergey-tihon/vs-output

FsLex/FsYacc output integrated into VS