Add HTTP, Coffeescript and Java to example.html

If those languages are not included `examples.html` has a lot
of code, that is not highlighted at all.
Merge pull request #322 from zeitgeist87/ExampleFix2

Add HTTP, Coffeescript and Java to gulpfile
Fix Java operators to correctly highlight examples.html

This patch basically adds a lot of `=?` at the end of operators that
were missing. The order of the `>=` and `<=` operator was wrong. It also
changes the order of the lookbehind pattern, so that the start of the
line is matched first. This last change fixes a lot of the bugs on the
`example.html` page.

The design of Prism makes it seem as if the regex multi line flag has no
effect, because strings are continuosly split up before the regexes are
applied. In this case it is necessary so that `^` is interpreted as the
start of a line instead of the start of the document.
Merge pull request #325 from zeitgeist87/FixJava

Fix Java operators to correctly highlight examples.html
Merge pull request #321 from zeitgeist87/gh-pages

Allow multiple regex per token name by using arrays
Use the new array syntax for clike and coffeescript

This patch uses the new array syntax for the `clike` language and for
`coffeescript`. For `clike` it fixes a minor bug, whereby The character
immediately in front of a single line comment is
highlighted as a comment as well.

something// something

This is because both definitions for single and multiline comments
have to be matched with a single regex and the `lookbehind` parameter
can only be applied to the first captured string.

For `coffeescript` the previously used `block-comment` token name is no
longer necessary.
Add auto generated files
Merge pull request #327 from zeitgeist87/UseArraySyntax

Use the new array syntax for clike and coffeescript