Add file for manually checking syntax highlighting

Currently there is no good to automate tests for the syntax highglighting.  But this is better than nothing.
Fix #45
Fix #31
Update typo in RVM section of README.md
Merge pull request #81 from bayendor/patch-1

Update typo in RVM section of README.md
Avoid conflict with native shortcut
Add CHANGES describing the changed shortcut.
Merge branch 'elia-alternate-file-shortcut' into us-master
Fix link.
Single quotes
More explicit tab trigger
"it 'should…" is bad practice
Add described_class snippet
Add a fast "expect" snippet
Files with "spec_helper" in the first line are probably RSpec stuff
Guess the Constant name from the file in #describe
Wrap existing code into expect clause
Add a full should snippet
Add save_and_open_page snippet (tab trigger “sop”).
Make easy to avoid passing an arg to before/after