Merge pull request #1 from sucheep-sri/develop

assignment1
Merge pull request #2 from sucheep-sri/develop

assignment2
Merge pull request #3 from sucheep-sri/develop

assignment3
Merge pull request #4 from sucheep-sri/develop

assignment4
Merge pull request #5 from sucheep-sri/develop

assignment5
Merge pull request #6 from sucheep-sri/develop

assignment7
hashing password before store to mongo
Merge branch 'hotfix/assignment7-hashing_password' into develop