Merge pull request #30 from joeyhoer/no-bc

Replacing bc with let
Adding changing locales to to C to avoid invalid number errors after merging pull request #cc18ec3
Merge branch 'master' of https://github.com/technopagan/adept-jpg-compressor

* 'master' of https://github.com/technopagan/adept-jpg-compressor:
  Adding changing locales to to C to avoid invalid number errors after merging pull request #cc18ec3