Docs updated (#16)

* use conda for building
* install ipywebrtc via pip/pypi
* plan was to use node, but building ipywebrtc on rtd gives a memory issue.

docs/environment.yml

@@ -0,0 +1,22 @@
+name: ipywebrtc_docs
+channels:
+- conda-forge
+- defaults
+dependencies:
+- jupyter_sphinx
+- ipywidgets
+- nbformat
+- nbsphinx
+- notebook>=4.2
+- python=3.6
+- sphinx>=1.4.6
+- sphinx_rtd_theme
+- tornado
+- python-dateutil
+- recommonmark
+- traitlets
+- ipywidgets
+- nodejs
+- pip
+- pip:
+  - ipywebrtc

docs/source/conf.py

@@ -94,12 +94,12 @@
 # a list of builtin themes.
 #
 html_theme = 'alabaster'
-# try:
-# 	import sphinx_rtd_theme
-# 	html_theme = "sphinx_rtd_theme"
-# 	html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
-# except:
-# 	print "rtd theme not found"
+try:
+	import sphinx_rtd_theme
+	html_theme = "sphinx_rtd_theme"
+	html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
+except:
+	print "rtd theme not found"
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
@@ -168,3 +168,5 @@
      author, 'ipywebrtc', 'One line description of project.',
      'Miscellaneous'),
 ]
+
+nbsphinx_allow_errors = True

readthedocs.yml

@@ -0,0 +1,4 @@
+conda:
+    file: docs/environment.yml
+python:
+    version: 3