Use map-promisified (#61)

* Add dependency on map-promisified

* Async methods refactored to utilize map-promisify

* Updated .gitignore

Author: soal

.gitignore

@@ -5,6 +5,7 @@ logs
 dist/*.hot-update*
 npm-debug.log*
 *.code-workspace
+*.je-project-settings
 
 # Runtime data
 pids
@@ -49,3 +50,4 @@ jspm_packages
 *.DS_Store
 vue-mapbox-demo
 checklist.txt
+.flowconfig

.tern-project

@@ -0,0 +1,13 @@
+{
+  "libs": [
+    "browser",
+    "jquery"
+  ],
+  "loadEagerly": [],
+  "plugins": {
+    "requirejs": {
+      "baseURL": "./",
+      "paths": {}
+    }
+  }
+}