Fixes sed error with urls using the dash delimiter.

[darioghilardi]

Fixes #17.

[jabes]

I was also having issues with sed, albeit not with the delimiter. I had to edit the same line as forked above to this:

sed -i 's/<%= search %>/<%= replace %>/g' <%= path %>

After removing '' following the -i option, it worked fine.
https://github.com/jabes/grunt-deployments/commit/243289d4a26c4d3f462a186fd552dafba78cb6f5#diff-2cb1ad4f3eb0ea704c74a73689ad1654

[getdave]

As an FYI to anyone coming across this commit in sed you can use delimiters other than / to mark the beginning and end of the search/replace pattern. One of these chars is the # character as employed here.

http://backreference.org/2010/02/20/using-different-delimiters-in-sed/