add flash notices
validation in database level
fix some rspec, it will fail until previous branches are merged
Merge pull request #3 from abhiahirwar/flash_message

add flash notices
Merge pull request #5 from abhiahirwar/fix_spec

fix some rspec, it will fail until previous branches are merged
Merge pull request #4 from abhiahirwar/validation

validation in database level
fix merge conflict