Adding nbsphinx to test-requirements for readthedocs. (#628)
Adding nbsphinx to test-requirements for readthedocs. (#628)

* Adding nbsphinx to test-requirements for readthedocs.
Readthedocs will now switch to using test-requirements.txt instead of requirements.txt

* Adding sphinx_rtd_theme

swift-lang/swift-e-lab,Parsl/parsl,Parsl/parsl,swift-lang/swift-e-lab,Parsl/parsl,Parsl/parsl