Coinffeine/coinffeine — pull request #192 by sortega (2014-06-24 13:28:03+00:00)
Title: Bump SBT and improve README.md

**Description:** when building the project from the scratch some false-alarm errors are logged with SBT < 0.13.5 so this PR bumps it to that version to fix #187. Also, improve the build instructions for Linux users.
**Testing:** tested building with an empty ivy cache from Ubuntu
**Coverage:** N/A