Handle install directory not existing correctly.

run.py

@@ -29,6 +29,10 @@ def export_vcs(project_directory, install_path):
         cwd = Path(os.getcwd())
         project_directory = cwd.parent.parent
 
+    # Make the install directory if it doesn't exist.
+    mkdir_command = "mkdir -p {}".format(install_path)
+    subprocess.run(mkdir_command, shell=True)
+
     # Where we're going to save the output.
     output_file = install_path + "/project_state.repos"