Installation failure

[tcrombie]

JB has installation failure due to imager.

I was having a problem with the easyXpress download from devtools as per the GitHub page. I was talking to Tim and Joy about it, and Joy had been having the same issue. I kept getting an error with the download, specifically "imager".

[tcrombie]

After some reading, JB went to the "imager" GitHub page, and saw it has a section specific for OS X.
Install XQuartz if you haven't already (it's required for the interactive functions).
You'll need Xcode (OS X's development environment) to compile source packages. The FFTW library is needed, and the easiest way to install it is via Homebrew. Install Homebrew, then run:

brew install fftw

Optionally, install libtiff for better support of TIFF files.

[tcrombie]

JB installed Xquartz and it seems to be working. I added a note on the README.md to help with installation.

"OS X installations of easyXpress require XQuartz to be installed. Follow the instructions here to install XQuartz."

We can close this issue once we confirm fix.