- Remove references to sudo in basics.md; see sudo instructions top of file

- Removing references to Boot2Docker replacing with Docker Machine
- Removing sudo warnings in instances where appropriate (no sudo in file)
- Updating with comments

Signed-off-by: Mary Anthony <mary@docker.com>

docs/userguide/dockerimages.md

@@ -256,7 +256,7 @@ Let's create a directory and a `Dockerfile` first.
     $ cd sinatra
     $ touch Dockerfile
 
-If you are using Boot2Docker on Windows, you may access your host
+If you are using Docker Machine on Windows, you may access your host
 directory by `cd` to `/c/Users/your_user_name`.
 
 Each instruction creates a new layer of the image. Let's look at a simple

docs/userguide/dockerizing.md

@@ -15,9 +15,10 @@ parent = "smn_applied"
 Docker allows you to run applications inside containers. Running an
 application inside a container takes a single command: `docker run`.
 
-> **Note:** if you are using a remote Docker daemon, such as Boot2Docker, 
-> then _do not_ type the `sudo` before the `docker` commands shown in the
-> documentation's examples.
+>**Note**: Depending on your Docker system configuration, you may be required to
+>preface each `docker` command on this page with `sudo`. To avoid this behavior,
+>your system administrator can create a Unix group called `docker` and add users
+>to it. 
 
 ## Hello world
 

docs/userguide/dockervolumes.md

@@ -90,13 +90,13 @@ You will notice in the above 'Volumes' is specifying the location on the host an
 In addition to creating a volume using the `-v` flag you can also mount a
 directory from your Docker daemon's host into a container.
 
-> **Note:**
-> If you are using Boot2Docker, your Docker daemon only has limited access to
-> your OS X/Windows filesystem. Boot2Docker tries to auto-share your `/Users`
-> (OS X) or `C:\Users` (Windows) directory - and so you can mount files or directories
-> using `docker run -v /Users/<path>:/<container path> ...` (OS X) or
-> `docker run -v /c/Users/<path>:/<container path ...` (Windows). All other paths
-> come from the Boot2Docker virtual machine's filesystem.
+>**Note**: If you are using Docker Machine on Mac or Windows, your Docker daemon
+>only has limited access to your OS X/Windows filesystem. Docker Machine tries
+>to auto-share your `/Users` (OS X) or `C:\Users` (Windows) directory - and so
+>you can mount files or directories using `docker run -v
+>/Users/<path>:/<container path> ...` (OS X) or `docker run -v
+>/c/Users/<path>:/<container path ...` (Windows). All other paths come from your
+>virtual machine's filesystem.
 
     $ docker run -d -P --name web -v /src/webapp:/opt/webapp training/webapp python app.py