Zest 0.1.1 - improvements

1. Stability and usability fixes and improvements:
   • Fixed handling of incorrectly downloaded documentation (#5)
   • Added ability to search within current document with CmdOrCtrl+F (#6)
   • Warning about the need to click 'Build index' after downloading a new item from DevDocs
   • Ability to choose from larger pool of Stack Overflow tags for indexing (#4)
   • Larger Settings modal
2. Updated stylesheets and documentation icons from DevDocs
3. Linux binary build is now done from scratch with Circle CI.