doctr deploy is broken on travis

[parente]

PR #35 removed the docker build approach in favor of a conda environment. Something in the move broke doctr deployment. The deploy key is not found. Probably a path change or something we need to config.

https://travis-ci.org/maxpoint/spylon/jobs/235480576

[parente]

.travis.yml now cd's to docs. Need to point to the key one directory up or pushd/popd or whatever.

https://github.com/maxpoint/spylon/blob/master/.travis.yml#L28

[parente]

Onto the next problem: https://travis-ci.org/maxpoint/spylon/builds/235685516