Added more CSV header translation supported by speedtest app.
Merge pull request #17 from amardeshbd/feature/translations

Added more CSV header translation supported by speedtest app.
Fixed speed unit typo - using bps. Fixes #29
Added part of CSV header data which is US locale supported and can be used for validation.
Updated validation logic to use part of header data. Fixes #31
Merge pull request #18 from amardeshbd/feature/data_validation_for_l13n

Feature/data validation for l13n
Merge branch 'dev'
Merge pull request #32 from amardeshbd/master

Fixes multiple issues and feature improvement.