Fix ray website (#963)

* update instructions

* update blog

* fix images

* Remove outdated documentation.

README.rst

@@ -31,5 +31,5 @@ More Information
 
 .. _`Mailing List`: https://groups.google.com/forum/#!forum/ray-dev
 .. _`Documentation`: http://ray.readthedocs.io/en/latest/index.html
-.. _`Blog`: https://ray-project.github.io/ray/
+.. _`Blog`: https://ray-project.github.io/
 .. _`HotOS paper`: https://arxiv.org/abs/1703.03924

site/README.md

@@ -15,15 +15,15 @@ To view the site, run:
 bundle exec jekyll serve
 ```
 
-Note that images included under `site/assets/` should be referred to with
-`<img src="{{ site.base-url }}/ray/assets/...">`. They will not render properly
-when serving the site locally, but this is required for getting the paths to
-work out on GitHub.
-
 ## Deployment
 
-To deploy the site, run (inside the main ray directory):
+To deploy the site, run
 
 ```
-git subtree push --prefix site origin gh-pages
+cd ~
+git clone https://github.com/ray-project/ray-project.github.io.git
+cd ray-project.github.io
+cp -r ~/ray/site/* .
 ```
+
+and commit as well as push the desired changes.

site/_posts/2017-05-17-announcing-ray.markdown

@@ -70,7 +70,7 @@ function definition, we call the function with ``f.remote()``, and we call
 order to block until the corresponding tasks have finished executing.
 
 <div align="center">
-<img src="{{ site.base-url }}/ray/assets/announcing_ray/graph1.png">
+<img src="{{ site.base-url }}/assets/announcing_ray/graph1.png">
 </div>
 <div><i>A graph depicting the tasks and objects in this example. The circles
 represent tasks, and the boxes represent objects. There are no arrows between
@@ -113,7 +113,7 @@ actual values will be unpacked before the function is executed, so when the
 `aggregate_data` function is executed, `x` and `y` will be numpy arrays.
 
 <div align="center">
-<img src="{{ site.base-url }}/ray/assets/announcing_ray/graph2.png">
+<img src="{{ site.base-url }}/assets/announcing_ray/graph2.png">
 </div>
 <div><i>A graph depicting the tasks and objects in this example. The circles
 represent tasks, and the boxes represent objects. Arrows point from tasks to the
@@ -157,7 +157,7 @@ Like remote functions, actor methods return object IDs (that is, futures) that
 can be passed into other tasks and whose values can be retrieved with `ray.get`.
 
 <div align="center">
-<img src="{{ site.base-url }}/ray/assets/announcing_ray/graph3.png">
+<img src="{{ site.base-url }}/assets/announcing_ray/graph3.png">
 </div>
 <div><i>A graph depicting the tasks and objects in this example. The circles
 represent tasks, and the boxes represent objects. The first task is the actor's