Make Grep case insensitive in download script

Github made the location header lowercase, so our get.sh script was
failing. This makes the grep case inseneitive.

Tested by running the script to make sure it failed, then making the
grep into a `grep -i` and running again, this time it worked.

Signed-off-by: Alistair Hey <alistair@heyal.co.uk>

Author: Waterdrips

get.sh

@@ -16,7 +16,7 @@ export BINLOCATION="/usr/local/bin"
 # Content common across repos #
 ###############################
 
-version=$(curl -sI https://github.com/$OWNER/$REPO/releases/latest | grep Location | awk -F"/" '{ printf "%s", $NF }' | tr -d '\r')
+version=$(curl -sI https://github.com/$OWNER/$REPO/releases/latest | grep -i location | awk -F"/" '{ printf "%s", $NF }' | tr -d '\r')
 if [ ! $version ]; then
     echo "Failed while attempting to install $REPO. Please manually install:"
     echo ""