Mobile client needs to test wether server is alive or not, to avoid unexpected crash. Therfore, a ping route is needed,
It should be like this:

• located on "/"
• no authentication required
• returns OK - 200
• aditionnally, returns an object with version + server date ("pour le swagg only").

Both routes /following and /followers don't send what they suppose to.

HTTP protocols error codes do not englobe every possible errors. Custom error codes need to be defined.
Error codes should start at 600, to prevent using http protocol's ones.
Error codes values should be defined in the Wiki.

So, on post with missing/invalid inputs, client should recieve an object with error codes.

ex:

var result = {
httpCode: 400,
errors: [602, 626, 645]
}

The recipes published by the people you follow are not in the feed.

We should be able to upload pictures for a recipe.

Route : "/recipes/[ID]"
Method: GET

Ingredients are good - but quantity does not show up (but quantity is saved in hash when GET /recipes)

Add a description to the recipe.

Since a recipe only has the ingredients ids, we should be able to retrieve an ingredient by its id.