Improve README a bit

Author: APShirley

README.md

@@ -1,9 +1,13 @@
 ## Load an ssh-key for github from lastpass on Mac OS X
 
   - Requires lastpass cli (`brew install lastpass-cli`)
-  - Usage is simple, add a key called github-ssh-key to your lastpass account. The key should be of type ssh-key in Lastpass. Then simply run the script as detailed below.
+  - Usage is simple, add a key called github-ssh-key to your lastpass account. 
+    The key should be of type ssh-key in Lastpass. 
+    Follow github's instructions on adding the public key component to your github account.
+    Then simply run the script as detailed below.
   - WARNING: the script **will remove all current ssh keys loaded in the agent without asking** (`ssh-add -D`). 
   - **Obviously you should read any script and understand what it does before running it**.
+  - This script assumes you get up and start work before 17:30 your local time.
 
 To run the script:
 `bash <(curl https://raw.githubusercontent.com/APShirley/lpass-ssh-add-key/master/add-key.sh)`