Revert "Restored the CMD instruction to the Dockerfile and removed the CMD instruction explanation, this is a bit of a simplification but is a simplier explanation for a newbie"

This reverts commit 9e53ea71fa9e6f0a71a72530df8bb7c5f17515c2.

golang/README.md

@@ -35,12 +35,14 @@ the build and runtime environment. In your `Dockerfile`, writing something along
 the lines of the following will compile and run your project:
 
     FROM golang:1.3.1-onbuild
-    CMD ["app"]
 
 This image includes multiple `ONBUILD` triggers which should cover most
 applications. The build will `COPY . /usr/src/app`, `RUN go get -d -v`, and `RUN
 go install -v`.
 
+This image also includes the `CMD ["app"]` instruction which is the default command 
+when running the image.
+
 You can then build and run the Docker image:
 
     docker build -t my-golang-app .

golang/content.md

@@ -19,12 +19,14 @@ the build and runtime environment. In your `Dockerfile`, writing something along
 the lines of the following will compile and run your project:
 
     FROM golang:1.3.1-onbuild
-    CMD ["app"]
 
 This image includes multiple `ONBUILD` triggers which should cover most
 applications. The build will `COPY . /usr/src/app`, `RUN go get -d -v`, and `RUN
 go install -v`.
 
+This image also includes the `CMD ["app"]` instruction which is the default command 
+when running the image.
+
 You can then build and run the Docker image:
 
     docker build -t my-golang-app .