Remove "Try xonsh" and fix doctr release deploy

"try xonsh" link is non-functional and is likely disappointing to new users who
try to use it.

quick other doc-related fix to re-install xonsh before second `doctr deploy` to
make sure that documentation that is uploaded reflects the last tagged release.

.travis.yml

@@ -59,6 +59,7 @@ script:
  cd ..;
  doctr deploy --deploy-repo xonsh/xonsh-docs dev;
  git checkout $(git describe --tags `git rev-list --tags --max-count=1`);
+ pip install --upgrade .;
  cd docs;
  make clean html;
  cd ..;

docs/intro.rst

@@ -57,48 +57,3 @@ command prompt. The language is a superset of Python 3.4+ with additional
 shell primitives that you are used to from Bash and IPython. It works on
 all major systems including Linux, Mac OSX, and Windows. Xonsh is meant
 for the daily use of experts and novices alike.
-
-**Try it out!**
-
-.. raw:: html
-
- <style>
- .tryitbutton {
- background-color: #84A6C7;
- border: none;
- color: white;
- padding: 15px 32px;
- text-align: center;
- text-decoration: none;
- font-size: 22px;
- margin: 4px 2px;
- cursor: pointer;
- border-radius: 8px;
- position:relative;
- float: right;
- right: 35%;
- bottom: 240px;
- }
- </style>
- <div id="trydiv"><p style="text-align:center;">
- <iframe id="tryframe" data-src="_static/xonsh-live.png"
- src="_static/xonsh-live.png" width="80%" height="480px"
- style="overflow:hidden;" scrolling="no">
- </iframe>
- <button class="tryitbutton" id="trybutton">Click to Try Xonsh!</button>
- <script>
- $("#trybutton").click(function(){
- var tryframe = $("#tryframe");
- var trybutton = $("#trybutton");
- tryframe.attr("src", tryframe.data("src"));
- trybutton.remove();
- });
- </script>
- </p>
- </div>
-
-
-.. <iframe id="tryframe" data-src="http:https://hermit.astro73.com/"
- src="_static/xonsh-live.png" width="80%" height="480px"
- style="overflow:hidden;" scrolling="no">
- </iframe>