Adds configurable resourcePath

[sweatercomeback]

This change allows you to modify the resourcePath with a subdirectory through configuration options:

miniprofiler.configure({ resourcePath: '/myapproot' }); app.use(miniprofiler.express());

This allows miniprofiler resources to load if your app root is not /.

[NickCraver]

Good suggestion!
I did fine one issue: there's one issue with double slash pathing - we should check if the pass-in path has a trailing slash, and if so remove it before concatenating (and remove the / in the concatenation itself) :)

[NickCraver]

With token-based replacement, wouldn't this result in a double // before the last segment? e.g. /prefix//mini-profiler-resources/

[sweatercomeback]

Good catch! I am now stripping any trailing slashes from options.resourcePath

[coveralls]

Coverage increased (+0.0006%) to 99.746% when pulling 01d58ab on sweatercomeback:master into fa9c21b on MiniProfiler:master.

[NickCraver]

👍 Thanks!