Updated resources CRUD with update function
Proceed with updating only if search successful
Merge pull request #245 from kbidarkar/fix-issues

Updated resources CRUD with update function
Added exceptions to update & delete functions
Merge pull request #250 from kbidarkar/fix-update-func1

[Master corrupted on JAN 03] Proceed with updating only if search successful
Merge pull request #251 from kbidarkar/update-exception

Added exceptions to update & delete functions