fixing travis build
recommend.storage to recommend.storages
Merge pull request #10 from atmb4u/patch-2

recommend.storage to recommend.storages
storage specific locks

Conflicts:
	recommends/tasks.py
fixing travis build
storage specific locks

Conflicts:
	recommends/tasks.py
try installing scipy binaries from ppa
use miniconda to install scipy
removed "sparse" installation
removed python2.6 testing
install condaenv
whitespace
Merge remote-tracking branch 'origin/travis' into develop

Conflicts:
	recommends/storages/base.py
Bump version: 0.0.18 → 0.0.19
Don't set expiration on lock key
Merge branch 'master' into develop

Conflicts:
	.bumpversion.cfg
	recommends/__init__.py
	recommends/storages/base.py
	setup.py
release the lock in case of error
removed unnecessary whitespace
updated changelog
Bump version: 0.0.20 → 0.0.21