Clean up reqs

- pip freeze
- Combine docs/requirements.txt with requirements.txt (No need for separate reqs if top-level calls sub-level.)

docs/requirements.txt

@@ -1,2 +0,0 @@
-Sphinx
-sphinx-rtd-theme

requirements.txt

@@ -1,11 +1,24 @@
-# Testing and documentation requirements
 -e .
--r docs/requirements.txt
-coveralls
-nose
-nose-cov
-pep8
-pyflakes
-check-manifest
-pyroma
-jarn.viewdoc
+Babel==2.2.0
+Jinja2==2.8
+MarkupSafe==0.23
+Pygments==2.1.3
+Sphinx==1.3.6
+alabaster==0.7.7
+check-manifest==0.31
+cov-core==1.15.0
+coverage==4.0.3
+coveralls==1.1
+docopt==0.6.2
+docutils==0.12
+jarn.viewdoc==1.7
+nose-cov==1.6
+nose==1.3.7
+pep8==1.7.0
+pyflakes==1.1.0
+pyroma==2.0.2
+pytz==2016.2
+requests==2.9.1
+six==1.10.0
+snowballstemmer==1.2.1
+sphinx-rtd-theme==0.1.9