Merge pull request #1111 from anandpdoshi/hotfix

[minor] [fix] outgoing email settings - Use TLS instead of Use SSL
[report] Customer Acquisition and Loyalty
[minor] removed debug in report
[minor] started versioning
[minor] fix typo
[minor] update install requirements
Merge pull request #1114 from rmehta/reports

[report] Customer Acquisition and Loyalty
Merge pull request #1112 from pdvyas/versioning

Semantic Versioning
[minor] Lead bugfix webnotes/erpnext#1115
Merge pull request #1116 from rmehta/master

[minor] Lead bugfix webnotes/erpnext#1115
[minor] fixed erpnext.org urls