Fixed typos in README

- Fixed lein-watch version
- Fixed :watchers key
Changed basic functionality

- Removed the passing of the specific file to the task
- Reduce the changed files and routes so that a particular watcher is executed
  only once, regardless of the number of changes files
- Only run a task if a route is found for the changed file
Merge branch 'andrew-nguyen-master'
release 0.0.3

 - Merge andrew-nguyen's pull request.
 - Fix sample-project in accordance with changes in 0.0.3.