Fix SdkDownloadTest download test

Temporary file is not passed as an argument to download method since
last commit. This commit fixes this and continues to check if the
temporary file was deleted.
Merge pull request #7 from joninvski/unitTest

Fix SdkDownloadTest download test
Makes gradle output in travis nicer

Informs gradle it is writing a dumb terminal making the output
messages shown in travis human readable.