Write the documentation of meteor

We need to write tutorials with test dataset:

• for taxonomic and functional analysis
• for strain analysis
• what else ?

changed milestone to %Meteor 3.3

added feature label

assigned to @amine.ghozlane

added in-progress label and removed feature label

changed milestone to %Meteor 3.4

changed milestone to %Meteor 3.5

changed the description

mentioned in commit ffa63f41