Update README.md

Small fix on description
Merge pull request #6 from reaper/patch-1

Update README.md
Added a script to generate freelan server certificate and private key
Merge branch 'master' of github.com:freelan-developers/freelan-all
Merge pull request #7 from reaper/master

Created an osx environment setup
Updated osx environment
Specified boost suffix and prefix environment variables for debug and release builds