Enable splash to go into background on Mac
Merge pull request #482 from langerhans/1.7-dev-macfix

Enable splash to go into background on Mac
Corrected the instructions to build the required files
Fixed a bunch of links and foramtting
Merge pull request #483 from tazz2004/1.7-Readme-fix

Few documentation fixes for 1.7 branch
Added scrypt_tests from 1.6
Merge pull request #486 from patricklodder/1.7-dev-scrypt-test

Added scrypt_tests from 1.6
Shiny, retina ready OS X icon file