Merge pull request #17 from mptsonev/master

Remove binaries from debug log and retry 4xx errors

Author: Mihail Tsonev

build.sh

@@ -31,7 +31,7 @@ func shouldRetry(err error) bool {
 	if ok {
 		httpCode := ae.Code
 		httpCodeMajorDigit := httpCode / 100
-		if httpCodeMajorDigit == 5 {
+		if httpCodeMajorDigit == 5 || httpCodeMajorDigit == 4 {
 			return true
 		}
 	}