- Added support for exact-phrase search using double quotes.
  Example: """\"This exact sentence\""""
- Added rudimentary error reporting at the application level;
  When an error occurs in the app, a popup window intercepts
  the error and displays an error message.
Merge pull request #2 from Preole/master

- Added support for exact-phrase search using double quotes.
- Added rudimentary error reporting at the application level;
  When an error occurs in the app, a popup window intercepts
  the error and displays an error message.