skip cached cookbooks missing their name attributes
add warning and reduce generate_cookbook duplication
update log message
Extract git mixin into its own module

Fixes #1208
Merge pull request #1209 from berkshelf/sethvargo/git_check

Extract git mixin into its own module
Merge pull request #1198 from berkshelf/omit_broken_name_cbs

Skip cached cookbooks missing their name attributes instead of failing
bump ridley and buff dependencies
Merge pull request #1219 from berkshelf/dependencies-update

bump ridley and buff dependencies
version bump 3.1.3