bump to v1.2.0, add update changelog

Author: tony

CHANGES

@@ -4,10 +4,11 @@ Changelog
 
 Here you can find the recent changes to tmuxp
 
+- :release:`1.2.0 <2016-06-16>`
 - :feature:`65` Ability to specify ``options`` and ``global_options`` via
   configuration. Also you can specify environment variables via that.
 
-  Include tests.
+  Include tests and add example.
 
 - :release:`1.1.1 <2016-06-02>`
 - :bug:`167 backported` fix attaching multiple sessions

tmuxp/__about__.py

@@ -1,6 +1,6 @@
 __title__ = 'tmuxp'
 __package_name__ = 'tmuxp'
-__version__ = '1.1.1'
+__version__ = '1.2.0'
 __description__ = 'tmux session manager'
 __email__ = 'tony@git-pull.com'
 __author__ = 'Tony Narlock'