Merge pull request #33 from bridadan/ci_pip_v9

Reverting CI pip to v9 due to mbed-cli issue

Author: Marcus Chang

.circleci/config.yml

@@ -6,6 +6,9 @@ jobs:
         working_directory: ~/storage-selector
         steps:
             - checkout
+            - run:
+                name: Revert pip to version 9.0.3
+                command: pip install pip==9.0.3
             - run:
                 name: Install Mbed CLI
                 command: pip install mbed-cli