Add option to ignore API limit check

- Added `checkLimit` option to ignore API limit check

lib/client.js

@@ -47,6 +47,8 @@ class Client extends EventEmitter {
       debug('apiCall', _.pick(params, ['method', 'url']))
       this.apiCalls += 1
     })
+    this.checkLimit =
+      options.checkLimit !== undefined ? options.checkLimit : true
 
     this.broadcasts = new Broadcast(this)
     this.campaigns = new Campaign(this)
@@ -134,6 +136,10 @@ class Client extends EventEmitter {
       // don't check the api limit for the api call
       return Promise.resolve()
     }
+    if (!this.checkLimit) {
+      // don't check the api limit for the api call
+      return Promise.resolve()
+    }
     if (this.maxUsePercent === 0) {
       // if maxUsePercent set to 0, do not check for the API limit (use at your own risk)
       return Promise.resolve()