Update error logging for promisified building

Merge pull request Morsmalleo#205 from Morsmalleo/Development

1.0-beta.4

Fixed 'parsing package' + 'app not installed' errors by migrating the…

… signer to 'uber-sign-apk'

Updated INSTRUCTIONS.md

Updated apktool 2.4.0 with apktool 2.5.0

beta version