Move browser code to browser-tool.js
First pass at npm module and Uglify integration.
Update features.
Adjustments to style and layout.
Clear output on error.
Remove console debugging.
Add options for anonymizing and mangling.
Style tweaks.
Toggle disabled class based on output.
Functional build.
Missing semicolon.
Simplest possible tests; nominally implements changes discussed in #1.
Lint tests.
Test various new options.
Add Travis-CI.
Update README.