apk generator grunt task, with config inside Gruntfile.js
Added grunt task to download the xwalk android template.
Passed location of downloaded file from downloader to generator.
Removed hard-wired arch and some console.logs.
Switched to stable crosswalk release.
Added subtargets to downloader, and added 'arch' to passthrough from downloader to builder.
Automatically getting android's sdk root path and api version.
Removed downloader.
Changes from review.
Fix some typos.
Fixes for Windows.
Switched to using native_libs.
Making grunt-crosswalk multitask and adding arm and x86 targets.
Handling mis-specifying architecture (arch prop vs template).