Merge pull request #1559 from markotoplak/macpipupdate

Updated pip in OS X dmg because newer version handles wheels better

scripts/build-osx-app.sh

@@ -111,7 +111,7 @@ SITE_PACKAGES=$("$PYTHON" -c'import sysconfig as sc; print(sc.get_path("platlib"
 
 echo "Installing/updating setuptools and pip"
 echo "======================================"
-"$PIP" install 'setuptools==18.*' 'pip==7.*'
+"$PIP" install 'setuptools==18.*' 'pip==8.*'
 
 echo "Installing orangeqt"
 echo "==================="