Do not attempt to copy files to the "Program Files" directories
Fix a few TypeScript warnings
Merge pull request #51 from phillip-hopper/TypeScript-Cleanup

Fix a few TypeScript warnings
Provide a different message when the file has no extension
Merge pull request #55 from andrew-polk/BL512_DRTxtFileMessage

Improve message informing user that sample texts should be .txt
Merge pull request #57 from phillip-hopper/BL-634

Do not attempt to copy files to the "Program Files" directories
Change whitespace for .ts files

We recently noticed and agreed that typescript files should follow
the same standard as javascript files, i.e. indented by 2 spaces
instead of tabs. This change applies the new rules to all .ts files.
Change whitespace for .htm* files

A while back it was noticed that HTML files should also be indented
by two spaces. This change applies the new rules to all .htm* files.
Change whitespace for .tmx files

It was decided that .tmx files should be indented by two spaces.
This change applies the new rules to all .tmx files.