Clarify git install instructions

[belandJibo]

Here's a patch which clarifies the git install instructions:

diff --git README.md README.md
index 7a109aa..712b138 100644
--- README.md
+++ README.md
@@ -125,10 +125,10 @@ Homebrew installation is not supported. If you have issues with homebrew-install

 If you have `git` installed (requires git v1.7+):

-1. clone this repo in the root of your user profile
+\1. clone this repo in the root of your user profile
   - `cd ~/` from anywhere then `git clone https://github.com/creationix/nvm.git .nvm`
-1. check out the latest version with `git checkout v0.33.5`
-1. activate nvm by sourcing it from your shell
+\2. `cd ~/.nvm` and check out the latest version with `git checkout v0.33.5`
+\3. activate nvm by sourcing it from your shell: `source nvm.sh`

 Now add these lines to your `~/.bashrc`, `~/.profile`, or `~/.zshrc` file to have it automatically sourced upon login:
 (you may have to add to more than one of the above files)

[ljharb]

Thanks, would you mind making a PR so I can review it that way?

[belandJibo]

Sorry, I don't have push permissions on this repo.

[ljharb]

@belandJibo the typical way it's done is to fork the repo, make the change on a branch on your fork, and make the pull request from there.

[belandJibo]

That seems like a waste of space and time for a three-line documentation change that can be plainly read above, but here you go: #1636

[ljharb]

Thanks!