Fix travis badge link

[rafaqz]

It would also be good to trigger the CI to build the docs for stable

[codecov-io]

Codecov Report

Merging #221 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #221   +/-   ##
=======================================
  Coverage   47.94%   47.94%           
=======================================
  Files          12       12           
  Lines         317      317           
=======================================
  Hits          152      152           
  Misses        165      165

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[NHDaly]

It would also be good to trigger the CI to build the docs for stable

Agreed! Does anyone know how to do this? I never managed to get this to work.