Updating readme with installation instructions and updating setup script

README.md

@@ -5,6 +5,13 @@ Command-line utility for quickly executing files containing code in a compiled l
 
 Seemlessly execute files as if they were scripts, leaving no trace of binaries behind.
 
+## Installation
+To install *car* enter the following command into a terminal:
+
+```
+sudo curl -sL "$(curl -s https://api.github.com/repos/nicholaschiasson/car/releases/latest | sed -n -e 's/^.*"browser_download_url": "\(.*\)"$/\1/p')" | sh
+```
+
 ## Usage
 - Add *car* to a local bin directory and make sure the directory is part of your ${PATH} environment variable.
 

build/car_setup.sh

@@ -1,4 +1,6 @@
 #!/usr/bin/env sh
 
-sudo curl https://raw.githubusercontent.com/nicholaschiasson/car/master/src/car.sh -o /usr/local/bin/car
-sudo chmod ugo+x /usr/local/bin/car
+echo "Downloading car and intalling into /usr/local/bin/"
+sudo curl -sSf https://raw.githubusercontent.com/nicholaschiasson/car/master/src/car.sh -o /usr/local/bin/car || (>&2 echo "Download failed." && exit 1)
+sudo chmod ugo+x /usr/local/bin/car || (>&2 echo "Installation failed." && exit 1)
+echo "Installation complete!"

src/car.sh

@@ -96,7 +96,7 @@ function Error()
     ERROR_MESSAGE="$1"
   fi
 
-  [ -n "$ERROR_MESSAGE" ] && (>&2 echo  "car: "$(ColorEcho "${color_light_red}" error:)" ${ERROR_MESSAGE}")
+  [ -n "$ERROR_MESSAGE" ] && (>&2 echo "car: "$(ColorEcho "${color_light_red}" error:)" ${ERROR_MESSAGE}")
   exit $EXIT_CODE
 }