Server now converts all locations to lower case so that user can type with different cases.
(feat) Users now have schemas.
Added new user routes to allow user info to be retrieved and posted.
Added new properties to be added to user. Will now use a default icon (temporary) and default to isSitter true on user api.
Sitter api is now connected to the database. Tested on local environment
Merge pull request #65 from wilandrade/mongoSchema

(feat) User api implemented. Sitter api now connected to database. Paired with Jeff V.