Implement Other functions

implement login, verify, createSession
Merge remote-tracking branch 'upstream/master'
Bug fix

crashing due to null reference exception . Fixed
Remove Data on each Run

Delete all data when APP is run . By doing so no duplicate error will
come
Implement Key-Value Storage

Implement Key-Value Storage
key-value

key-value
Test Data for key value

Test Data for Key value has been added
Merge pull request #3 from FaqirAamir/master

Implement Key Value Storage