Webhook command fixes

[kennethlimcp]

This fix will allow the following commands:

• spark webhook create slack.json
• spark webhook GET <your_event_name> http://<website.you.are.trying.to.contact> <core_id>
• spark webhook POST <your_event_name> http://<website.you.are.trying.to.contact> <core_id>

There might be more changes due to server parsing the webhook but this will fulfill all the commands mentioned in Documentation.

spark webhook create

Shows helps text:

NAME:
spark webhook create

DOES: 
    Creates a postback to the given url when your event is sent

xxxx

spark webhook create test.json

Result:

Using settings from the file test.json
Sending webhook request  { uri: 'https://api.spark.io/v1/webhooks',
  method: 'POST',
  json: true,
  form: 
   { event: 'temp',
     url: 'https://testing.url',
     coreID: '1209382138138',
     requestType: 'GET',
     headers: {},
     query: { temp: '10' },
     mydevices: true,
     access_token: '450ddb8ea93dd56d7aa6b246' } }
Successfully created webhook!

spark webhook GET eventName url core_id

eg. webhook GET i_want_get http:///get.me 1209303912093039

Sending webhook request  { uri: 'https://api.spark.io/v1/webhooks',
  method: 'POST',
  json: true,
  form: 
   { event: 'i_want_get',
     url: 'http:///get.me',
     deviceid: '1209303912093039',
     requestType: 'GET',
     access_token: '450ddb8ea93da3d7aa6b246' } }
Successfully created webhook!

spark webhook POST eventName url core_id

eg. webhook POST post_me http:///post.me 330284030940394039

Sending webhook request  { uri: 'https://api.spark.io/v1/webhooks',
  method: 'POST',
  json: true,
  form: 
   { event: 'post_me',
     url: 'http:///post.me',
     deviceid: '330284030940394039',
     requestType: 'POST',
     access_token: '450ddb8ea93da3fcda6b246' } }
Successfully created webhook!

[kennethlimcp]

moved here: particle-iot/particle-cli#24