fix ctrlp working_path_mode
Use elzr/vim-json instead leshill/vim-json

leshill/vim-json will NOT be updated anymore, again.
Merge pull request #365 from JoveYu/3.0

fix ctrlp working_path_mode
Merge pull request #367 from perfectworks/3.0

Use elzr/vim-json instead leshill/vim-json
Merge branch '3.0' of github.com:spf13/spf13-vim into 3.0