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 There is a dependency on an ObjC project [ZipArchive](https://github.com/ZipArchive/ZipArchive).  OS X CLI targets and frameworks don't play together very well. The "easiest" way to reference it is to add the code manually to WhiskSwiftTools.  Clone ZipArchive and install per the documentations on the ZipArchive readme. Copy the SSZipArchive folder into the project folder and link to the libz library. WhiskSwiftTOols includes bridging header file you can reference.
 
+## Using
+wsktool looks for a property file ~/.wskprops to get your OpenWhisk credentials and namespace.  You get this when you install the OpenWhisk CLI, or you can create it yourself.  It looks like this:
+
+```
+APIHOST=openwhisk.ng.bluemix.net
+NAMESPACE=<whatever namespace you are using>
+AUTH=<auth token from openwhisk>
+```
+
 ### License
 
 Copyright 2015-2016 IBM Corporation