general fixes

fixed error `[[ not found`
edited readme to be more helpful

README.md

@@ -1,3 +1,10 @@
-Usage: ./still_alive.sh
+##Dependencies
+Please download all the dependencies:
+https://github.com/jhechavarria/say.sh
+##Usage:
+`git clone https://github.com/joeheyming/still_alive.git`
+`cd still_alive`
+`chmod +x still_alive.sh
+`./still_alive.sh`
 
 Enjoy!

still_alive.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 slow_type() {
     echo $1 | pv -qL 10;
@@ -24,7 +24,7 @@ echo ""
 while read line; 
 do 
 	(say -v Vicki $line &);
-	if [[ $line != '.' ]] 
+	if [[ $line != . ]]
 	    then 
 	        echo $line | grep 'Aperture Science' && show_file ./aperture_logo.txt;	        
 		echo $line | grep -i 'black mesa' && show_file ./black_mesa_logo.txt;