Fix mojito test mock module
Added  to the steps, replaced  with . Also, added updates to the  and the command for installing dependencies.
Merge branch 'develop' into code_exs_update_0.9
Merge downstream from #develop
Merge pull request #1359 from zhouyaoji/code_exs_update_0.9

[docs] Updated the documentation for the developer guide code examples for v0.9.
Merge pull request #1360 from imalberto/fix-moduletest

Fix the test module for mocking mojit models.