make type optional and fall back to 'text'
fix tabs -> spaces
make error prop more declarative
also respect error={null} on input
Doc Site - added font icon explanation. Closes #83
Merge pull request #98 from romeovs/master

Make Input component more useful (respects error prop declaratively)
Added instructions to build the doc site to readme. Closes #58
Merge remote-tracking branch 'upstream/master'
Fix error message handling for slider