Add NPM package file.
Ignore generated .js files.
Generalize description.
Ignore cljs output folder.
Add build script.
Automate package release.
Fix error handling.
Make tagging/publishing dep on clean working dir.
Fix function call.
Fix build target.
Remove extraneous whitespaces.
Remove unused dependency.
Include MIT license.
Fix misc. syntax issues.
Add support for sentiment analysis from cmd line.
Distinguish between dev and prod builds.
Output positive msg to stdout instead of stderr.
Add support for sentiment analysis from file.
Add doc for sentiment analysis.
Add general usage description.