Add Shougo/neosnippet-snippets. Fixes #539. Shougo/neosnippet version 4.1 split the repository into two and the other half is now missing, see the PR for details.
Fix neosnippet and neosnippet-snippets order to follow the instructions at Shougo/neosnippet
Merge pull request #551 from ljani/3.0

Add Shougo/neosnippet-snippets. Fixes #539.