Hooked up Work Item screen to API

mobile/src/API.js

@@ -248,9 +248,6 @@ class API extends EventEmitter {
   deleteUser(_id) {
     return this.delete('/users/' + _id)
   }
-  setUserImage(details) {
-    return this.put('/users/set-image', details)
-  }
   enterRoom(roomName) {
     return this.put('/users/enter-room/' + (roomName || ''))
   }
@@ -258,6 +255,22 @@ class API extends EventEmitter {
     return this.put('/users/leave-room')
   }
 
+  getWorkItem(_id) {
+    return this.get('/workitems/' + _id)
+  }
+  listWorkItems() {
+    return this.get('/workitems')
+  }
+  createWorkItem(workItem) {
+    return this.post('/workitems', workItem)
+  }
+  updateWorkItem(workItem) {
+    return this.put('/workitems', workItem)
+  }
+  deleteWorkItem(_id) {
+    return this.delete('/workitems/' + _id)
+  }
+
   upload(file, progressCallback) {
     return new Promise((resolve, reject) => {
       const chunkSize = 32 * 1024