docs: revise the SUPPORT.md guide (#590)

- Remove mention about Gitter channel covering Resin.io as a whole.
- Wrap text as the other documents.
- Move links to the bottom.
- Encourage users to submit OS/Etcher version and DevTools info.

Signed-off-by: Juan Cruz Viotti <jviottidc@gmail.com>

SUPPORT.md

@@ -1,13 +1,33 @@
 Getting help with Etcher
 ========================
 
-There are various ways get support for Etcher if you experience an issue or have an idea you'd like to share with us.
+There are various ways get support for Etcher if you experience an issue or
+have an idea you'd like to share with us.
 
 Gitter
 ------
-We have a [Gitter chat room](https://gitter.im/resin-io/etcher) for Resin.io which is open to everyone, please come join us :). The room covers Resin.io as a whole, including but not limited to Etcher. Drop us a line there and the Resin.io staff and community users will be happy to assist.
+
+We have a [Gitter chat room][gitter] for Etcher which is open to everyone,
+please come join us :). Drop us a line there and the Resin.io staff and
+community users will be happy to assist.
+
+Make sure to mention the following information to help us provide better
+support:
+
+- The Etcher version you're running.
+
+- The operating system you're running Etcher in.
+
+- Relevant logging output, if any, from DevTools, which you can open by
+  pressing `Ctrl+Alt+I` or `Cmd+Alt+I` depending on your platform.
 
 GitHub
 ------
 
-If you encounter an issue or have a suggestion, head on over to Etcher's [issue tracker](https://github.com/resin-io/etcher/issues) and if there isn't a ticket covering it, [create one](https://github.com/resin-io/etcher/issues/new).
+If you encounter an issue or have a suggestion, head on over to Etcher's [issue
+tracker][issues] and if there isn't a ticket covering it, [create
+one][new-issue].
+
+[gitter]: https://gitter.im/resin-io/etcher
+[issues]: https://github.com/resin-io/etcher/issues
+[new-issue]: https://github.com/resin-io/etcher/issues/new