Added comment syntax for bash preambles (#!...!#) in scala script files

If the first characters of the file are #!, the character combination
is given comment starter syntax. The comment is ended with a
corresponding !#. The rule does not apply elsewhere in a file.

Closes #42
Update for marmalade / melpa package.

Signed-off-by: Gary Pamparà <gpampara@gmail.com>
moved provides to end of files
Reverted unintended removal of whitespace deletion hook