Update wercker.

wercker.yml

@@ -4,12 +4,21 @@ box: wercker/golang
 build:
   # The steps that will be executed on build
   steps:
-    # A step that executes `go lint command
-    - go lint
-    # A step that executes `go get ./...` command
-    - go get ./...
-    # A step that executes `go test ./...` command
-    - go test
+    # Get the project
+    - script:
+        name: go get
+        code: |
+          go get ./...
+    # Lint the project
+    - script:
+        name: go lint
+        code: |
+          go lint
+    # Test the project
+    - script:
+        name: go test
+        code: |
+          go test
 
     # A custom script step, name value is used in the UI
     # and the code value contains the command that get executed