[ADD] package.json
[Modify] Update feeds user/friend/like/together general info when user update general info
[Modify] Using mongodb query and filter syntax to update friendly handling
[Add] API for get single feed info
[Add] API for feed like handling
[Add] API for post feed's comment and show single feed's comment list
[Add] API for feed's comment handling
[Add] API for feed's comment like handling
Merge branch 'develop'