constants tests and documentation

README.md

@@ -40,6 +40,18 @@ also be set to a strong, random password.
 * For Skynet mounts, add `-sk` argument to all commands listed above.
 * For ScPrime mounts, add `-sp` argument to all commands listed above.
 
+## Module Environment Variables
+
+* To successfully complete unit tests, a `repertory` mount supporting remote mount needs to be
+  active. Set the following environment variables prior to running tests:
+    * `TEST_HOST`
+    * `TEST_PASSWORD`
+    * `TEST_PORT`
+* To override the version being sent to `repertory`, set the following variable:
+    * `REPERTORY_JS_FORCE_VERSION`
+        * NOTE: This variable is primarily used for debugging/testing purposes and should normally
+          NOT be set.
+
 ## Example API Usage
 
 ```javascript