CLI updated with better and readable output

[ankit8898]

• CLI updated

agupta@agupta01scl ~/D/p/p/akamai-cloudlet-updater> acm get_policy_versions --policy-id="38548"
Policy versions:
+---------------------------------------------+----------+---------------------------------------------------+
| Location                                    | Revision | Description                                       |
| /cloudlets/api/v2/policies/38548/versions/4 | 1086058  | use threshold_value cookie for ajax call, testing |
| /cloudlets/api/v2/policies/38548/versions/3 | 1086052  |                                                   |
| /cloudlets/api/v2/policies/38548/versions/2 | 1084925  | Same as version 1, just updating via API          |
| /cloudlets/api/v2/policies/38548/versions/1 | 1082822  | initial version                                   |
+---------------------------------------------+----------+---------------------------------------------------+

• License updated