MAINT: point wheel upload script to terryfy

Terryfy repo has wheel uploader script that does the actual wheel upload
/ download step.  Use that instead to simplify local wheel upload
script.

tools/osx_wheel_upload.sh

@@ -1,30 +1,17 @@
 #!/bin/bash
 # Script to download / check and upload scikit_image wheels for release
-RACKSPACE_URL=http://wheels.scikit-image.org
 if [ "`which twine`" == "" ]; then
     echo "twine not on path; need to pip install twine?"
     exit 1
 fi
+if [ "`which wheel-uploader`" == "" ]; then
+    echo "wheel-uploader not on path; see https://github.com/MacPython/terryfy"
+    exit 1
+fi
 SK_VERSION=`git describe --tags`
 if [ "${SK_VERSION:0:1}" != 'v' ]; then
     echo "scikit image version $SK_VERSION does not start with 'v'"
     exit 1
 fi
-WHEEL_HEAD="scikit_image-${SK_VERSION:1}"
-WHEEL_TAIL="macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.whl"
-mkdir -p wheels
-cd wheels
-rm -rf *.whl
-for py_tag in cp27-none cp33-cp33m cp34-cp34m
-do
-    wheel_name="$WHEEL_HEAD-$py_tag-$WHEEL_TAIL"
-    wheel_url="${RACKSPACE_URL}/${wheel_name}"
-    echo "Fetching $wheel_url"
-    curl -O $wheel_url
-    if [ "$?" != "0" ]; then
-        echo "Failed downloading $wheel_url; check travis build?"
-        exit $?
-    fi
-done
-cd ..
-twine upload wheels/*.whl
+echo "Trying download / upload of version ${SK_VERSION:1}"
+wheel-uploader -v scikit_image "${SK_VERSION:1}"