docs: draw attention to the git url versioning

README.md

@@ -25,6 +25,8 @@ Step definitions are in `test/cucumber`
 The intention is to install a tagged version of the testsuite into each adapter so that if we develop 
 the testsuite existing adapter implementations won't break. 
 
+In JS the target tag/branch/commit is specified with # after the git url
+
 ### NPM 
 
 ```bash
@@ -39,6 +41,8 @@ yarn add --dev git+https://git.noc.ac.uk/communications-backbone-system/backbone
 
 ### PIP 
 
+In pip the target tag/branch/commit is specified with @ after the git url
+
 ```bash
 echo
 "git+https://git.noc.ac.uk/communications-backbone-system/backbone-adapter-testsuite.git@[tag|branch|commit]#egg=backbone-adapter-testsuite" >> requirements.txt