added "webassets.paths" configuration to enable adding alternate asset locations
bumped version (latest on pypi is 0.7.1)
merged 4bc077e38c374d226353676ea7eedf86e32f8278 (from sontek/pyramid_webassets:master)
merged master => paths
corrected merge with master
Merge remote-tracking branch 'metagriffin/paths'

Conflicts:
	README.md
	pyramid_webassets/__init__.py