Fixed syntax error
Remerged with upstream
Readded samples folder
Checked out lowtex.js from 304d42a due to re-merge conflicts
Added checking for nonexistant commands and filters, and error handling for commands and filters
Moved plugins demo to main directory, and added it to example.lt to allow integration with existing tests.
Removed version control
Changed indentation to 4 spaces across all files.
Made failing due to plugin issues much more graceful
Proofread the readme file
Merge pull request #3 from sl/plugins

Plugins Revision