Make the ending comma/curlybrace after templateUrl optional.

[Riobe]

I'm not sure if this is foolproof for all use cases this loaders is being used in. I've only tested it against my own app and saw it working. It simply makes the comma at the end of the line optional.

This will be a WIP until I get the tests passing.

If there are no downsides to this, then it should fix #50 and #58.

[codecov-io]

Codecov Report

Merging #67 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master      #67   +/-   ##
=======================================
  Coverage   96.42%   96.42%           
=======================================
  Files           1        1           
  Lines          28       28           
  Branches        5        5           
=======================================
  Hits           27       27           
  Misses          1        1

Impacted Files	Coverage Δ
index.js	96.42% <100%> (ø)	⬆️

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[Riobe]

Second commit changes the pull request to essentially switch the "match until you find a quote, double quote, or backtick" to "match until you find a quote, double quote, or backtick that doesn't follow a backslash".

This works for all the test cases and for my personal app. Any other suggestions would be very welcome.