Forced Sphinx version prior to 1.5
Forced Sphinx version prior to 1.5

- Sphinx 1.5 dropped support for Python 3.3 which is the used in the
  travis file for CI.

yang-ling/i3pystatus,drwahl/i3pystatus,fmarchenko/i3pystatus,schroeji/i3pystatus,facetoe/i3pystatus,enkore/i3pystatus,m45t3r/i3pystatus,richese/i3pystatus,fmarchenko/i3pystatus,Arvedui/i3pystatus,ncoop/i3pystatus,enkore/i3pystatus,richese/i3pystatus,yang-ling/i3pystatus,Arvedui/i3pystatus,teto/i3pystatus,drwahl/i3pystatus,m45t3r/i3pystatus,schroeji/i3pystatus,teto/i3pystatus,ncoop/i3pystatus,facetoe/i3pystatus