Detailed Build Reset Instructions

[njriasan]

So I have been working on expanding on the given examples, both with the goal of being able to add to the list of examples with a Python example for Graphene and in general for utilizing your platform. One consistent problem I have had is that I am not clear on the process to reset file and rebuild my application. For example if I want to modify https-server.py to run in SGX-LKL I need to delete the image being produced and possibly the duplicated https-server.py for my changes to go through. Would it be possible to update the Makefiles to more consistently rebuild after source code changes or at least provide some documentation on how to reset/update files for each example, including possible changes to the libraries being built?