Fix failing test case for issue 124

The test failed to search-forward to the heredoc and instead matched the
string 'heredoc' inside the comment.

Signed-off-by: Eric James Michael Ritz <ejmr@plutono.com>
Add Joris Steyn to the list of contributors
Enable case sensitive search in 'with-php-mode-test'

Signed-off-by: Eric James Michael Ritz <ejmr@plutono.com>
Add regression test of #144

Signed-off-by: Eric James Michael Ritz <ejmr@plutono.com>
Improve Makefile for testing various Emacs

Signed-off-by: Eric James Michael Ritz <ejmr@plutono.com>
Support highlighting interpolated variables

Signed-off-by: Eric James Michael Ritz <ejmr@plutono.com>
README: Add section of in-progress features
README: Correct a typo re. cc-mode-conversion
Enable travis-ci

- Add travis configuration file
- Fix test for older Emacs(<= 24.3).

Because font-lock-add-keywords does not work in batch-mode on older Emacs.

Signed-off-by: Eric James Michael Ritz <ejmr@plutono.com>