Create sendRoute() cloud code function in Parse CC

[yintothayang]

request.data: { routeId: "route id here", userId: "user id here" }

functionality -

• Add User the Route's attributes.usersSent array of User Pointers
• Increment the Route's attributes.sends int
• Add route to the users's attributes.usersSent array of Route Pointers
• Increment the User's 'attributes.sends' int