Use TARGET_FILE in ctlrender unittest. Fixes #45.
Updates README with new brew install URL

* closes #43
Updates README with homebrew installation instructions
updates README.md

* updates README.md to document libTiff dependency
* closes #48
Updates README.md

* Fixes copy/paste bomb
Fix code source mode

Even when filename and moduleName were empty, a findModule was done
and throws an exception preventing moduleSource to be use instead.

Signed-off-by: mfe <mfe@mikrosimage.eu>