Created ANTLR Tool output window that pops up when parser generation has errors or warnings. Fixes #35.
Merge pull request #2 from parrt/antlr-tool-output

Created ANTLR Tool output window that pops up when parser generation has errors / warnings.
Merge pull request #54 from parrt/master

Created ANTLR Tool output window that pops up when parser generation has errors / warnings.