Replace HTTPie with curl in README, link to API doc

* `curl` is widely installed, and so writing the API examples with
  `curl` removes the HTTPie dependency.
* Let's link to the new REST.md to show off the API documentation.
* Mark the V1 API as deprecated to start moving users to the V2 API.
Reduce header visibility, too much bold
Reduce more bold text, focus on API examples
Merge pull request #130 from mesosphere/readme-v2-example

Replace HTTPie with curl in README, link to API doc
Fixed a typo in the REST docs for the `/v2/apps?cmd={command}` endpoint, regenerated `REST.md`.
Merge branch 'master' of github.com:mesosphere/marathon
Add a table of contents to v2 API docs
Refer to "all running apps" for /v2/apps?cmd={command}

It doesn't list just one.
Merge pull request #133 from mesosphere/api-v2-toc

Add a table of contents to v2 API docs
Make this a little more modular.
Upgraded Chaos dependency to latest release (0.5.2).  Added an override for the resource cache control header value to burst browser caches for static assets.
Merge pull request #135 from mesosphere/wip-cache-burst

Burst Browser Cache for Static Assets
Append "v=1" to bust cache for next JS request

Since this will go out with the release of Marathon that serves
"must-validate" cache headers, this version string only needs to be
updated once.

This pairs with commit 9cbf3a916930fc30392fedb8e6ab8851eab58c83, which
responds with "Cache-Control: max-age=0, must-revalidate".
Line length.
Support flags as well as options with values.
Merge pull request #140 from mesosphere/wip-extended-options

Support flags as well as options with values.
Upgrade to Bootstrap v3.1.0

* No style changes were needed since the released was mostly backwards
  compatible.
* Added modal sizes like "modal-lg".
README: wrap at 79, improved formatting

Update the README doc to wrap at 79 characters where possible and
improve formatting to better match the way it will actually be rendered
with Markdown. For example:

One statement.
Another statement.

Is rendered with Markdown as:

One statement. Another statement.

Tested with grip markdown renderer.
REST template: 79 char wrap, formatting

Wrap the REST markdown template at 79 characters where possible. Remove
trailing whitespace.
Merge pull request #141 from mesosphere/doc-formatting-79char

README and REST documentation formatting improvement