Unify documentation style

Author: SylvainCorlay

README.md

@@ -24,6 +24,12 @@ The Python bindings for `xtensor` are based on the [pybind11](https://github.com
 conda install -c conda-forge xtensor-python
 ```
 
+## Documentation
+
+To get started with using `xtensor-python`, check out the full documentation
+
+http://xtensor-python.readthedocs.io/
+
 ## Usage
 
 xtensor-python offers two container types wrapping numpy arrays inplace to provide an xtensor semantics

docs/source/_static/main_stylesheet.css

@@ -0,0 +1,4 @@
+.wy-nav-content{
+    max-width: 1000px;
+    margin: auto;
+}

docs/source/conf.py

@@ -15,9 +15,13 @@
 
 html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
 
+def setup(app):
+    app.add_stylesheet("main_stylesheet.css")
+
 extensions = ['breathe']
 breathe_projects = { 'xtensor-python': '../xml' }
 templates_path = ['_templates']
+html_static_path = ['_static']
 source_suffix = '.rst'
 master_doc = 'index'
 project = 'xtensor-python'