[#46] moved login authenticate function to global madule space for testing
[#46] proper error reporting in argv from submodule failure
[#46] pgbuild build <platform> support

partially implemented platform arg sanity checks
seems to hang when platform arg is iOS when account has no uploaded certificate
[#46] first pass cli/build module spec updated to jasmine 1.3.1, current spec still behaves > difficulty in silencing console.prompt, tests behave as they should but unwanted output
[#47] additional test for login fail case in cli/build.spec