Prior to this change, JS files without extension had not been linted.
To match them, we need a combination of positive and negative globbing
that does not mix well with the existing file selection for linting. Thus, we use
npm-run-all to run two ESLint invocations unconditionally in sequence
while still preserving the error code.
* Lint JS w/out extension too
* Fix newly surfaced linting errors
* Make use of npm-run-all for test script too
useful, which happens in Android SDK Tools 25.3.1.
explicitly set the CWD of the spawned emulator process to workaround a recent google android sdk bug.
rename android_sdk_version.js to android_sdk.js, to better reflect its contents.
have create.js copy over the android_sdk_version batch file.