Skip OSX builds for now
Travis builds in OSX are stalling.  (Queueing times of several days.  At
least)  Let's add them when the feedstock is created and Travis has
recovered.
@@ -14,7 +14,7 @@ source:
- remove_setuptools-scm_dependency.patch
build:
- skip: True # [py3k]
+ skip: True # [py3k or osx]
number: 0
script: python setup.py install --single-version-externally-managed --record record.txt
