Documentation around algorithm_config.yml

[rtapella]

• I think you need an empty File section in the algorithm config yml or something related to that section being empty/missing. check on this
• One downside to using the GUI to generate the algorithm.yml file (aside from too much typing or copy-pasting) is that the generated yml file has all entries alphabetized, which really screws up readability by specific ordering made my hand for making things easier to read.