Updated documentation in doc and README and made some small edits to bash script…

Updated documentation in doc and README and made some small edits to bash script for added robustness

README.md

@@ -8,8 +8,9 @@ Installation
 The installation process is a bit messy at the moment. Here's a high-level
 overview of what you should do to get started.
 
-**TLDR:** There is a `scripts/create-dev-env.sh` script that will attempt to set all
-of this up for you. If you're in a hurry, run that script. Otherwise, I suggest
+**TLDR:** There is a `scripts/create-dev-env.sh` script, `scripts/create_mac_dev_env.sh` 
+for mac computer, that will attempt to set all of this up for you. 
+If you're in a hurry, run that script. Otherwise, I suggest
 that you understand what the script is doing, and why, by reading this document.
 
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