Allow unversioned builds in release zip

Fix for OS X's dumb inplace sed that left "-e" files in the release >:(

Author: dfreedm

bin/make-release.sh

@@ -96,7 +96,7 @@ build() {
   # version number on build file
   cp platform.min.js platform-${VERSION}.min.js
   cp platform.min.js.map platform-${VERSION}.min.js.map
-  sed -i -e "s|\(//# sourceMappingURL=\)platform.min.js|\1platform-${VERSION}.min.js|" platform-${VERSION}.min.js
+  sed -i '' -e "s|\(//# sourceMappingURL=\)platform.min.js|\1platform-${VERSION}.min.js|" platform-${VERSION}.min.js
   mv platform{,-$VERSION}.min.js{,.map} ../
   ok
   popd >/dev/null
@@ -115,7 +115,7 @@ build() {
   # version number on build file
   cp polymer.min.js polymer-${VERSION}.min.js
   cp polymer.min.js.map polymer-${VERSION}.min.js.map
-  sed -i -e "s|\(//# sourceMappingURL=\)polymer.min.js|\1polymer-${VERSION}.min.js|" polymer-${VERSION}.min.js
+  sed -i '' -e "s|\(//# sourceMappingURL=\)polymer.min.js|\1polymer-${VERSION}.min.js|" polymer-${VERSION}.min.js
   mv build.log polymer{,-$VERSION}.min.js{,.map} ../
   ok
   popd >/dev/null
@@ -124,7 +124,7 @@ build() {
 package() {
   log "ZIPPING" "ALL REPOS"
   rm -f polymer-all-$VERSION.zip
-  zip -q -x "polymer-$VERSION/polymer.min.js*" -x "polymer-$VERSION/platform.min.js*" -x "polymer-$VERSION/polymer/polymer.concat.js*" -x "*.git*" -x "*node_modules/*" -r polymer-all-$VERSION.zip polymer-$VERSION
+  zip -q -x "polymer-$VERSION/polymer/polymer.concat.js*" -x "*.git*" -x "*node_modules/*" -r polymer-all-$VERSION.zip polymer-$VERSION
   ok
 }