Installation README for McStas 2.2a on Mac OS X 10.10 Yosemite

A) ESSENTIAL PREREQUISITES:
Xcode from Apple, either installed via DVD or from the App Store
Xquartz from http://xquartz.macosforge.org/landing/

B) Run the metapackage for installing the package - the defaults provide the
   essential bits to run McStas with the Perl tools as well as the gcc and
   gfortran compilers from hpc.sourceforge.net, installed to /usr/local.
   Optionally select openmpi for installation, this will also be installed to
   /usr/local.

   Follow the URL at the end of this document for information on the Python tools

C) If you want to try our new mcgui-py, a Python-Qt based gui, please
     - Download and install Anaconda Python 2.7 (using the "for me only" option).
     - When installation is done, start a new terminal and locate the folder where you downloaded
       and unpacked the McStas installation bundle. Inside the extras/ folder you will find a subfolder
       called QScintilla/. 
     - Run the script BuildMe.command by typing "./BuildMe.command".
       (Browsing your way using Finder and double-clicking the BuildMe.command icon should also work)
     - NOTE: If your system prompts you to install command line tools: Accept to install. Afterwards, 
       run the script "BuildMe.command" again.
     - "mcgui-py" should now be available.

McStas-2.2a is available in /Applications/McStas-2.2a.app - and can be 
removed by dragging that bundle to the trash