added readme

Author: scriptingosx

README.md

@@ -0,0 +1,19 @@
+# quickpkg
+
+OS X has had the `pkgbuild` tool since Xcode 3.2 on Snow Leopard. With pkgbuild you can directly build a installer package from an application in the `/Applications` folder:
+
+```
+pkgbuild --component /Applications/Numbers.app Numbers.pkg
+```
+
+Or even an application inside a mounted dmg:
+
+```
+pkgbuild --component /Volumes/Firefox/Firefox.app \
+         --install-location /Applications \
+         Firefox.pkg
+```
+
+This tool even does the work of determining a bundle's identifier and version and sets the identifier and version of the pkg to the same values.
+
+However, `pkgbuild` does not