fix: Add readme and fix shellcheck

README.md

@@ -0,0 +1,11 @@
+# Not Crystaldiskmark
+
+I wanted something to compare disks on Linux/Mac and enjoy
+CDM as a great generalized baseline. This uses fio to reproduce
+the same results in Linux. The simple curses library is included
+to produce a cleaner output, but is not required for use.
+
+```bash
+# Defaults to running in current directory if not specified
+ncdm.sh /mnt/bla
+```

ncdm.sh

@@ -8,7 +8,7 @@ command -v jq >/dev/null 2>&1 || { echo >&2 "Package 'jq' not installed. Abortin
 LOOPS=1 # How many times to run each test
 SIZE=1024m # File size
 
-if [ -z $1 ]; then
+if [ -z "$1" ]; then
     TARGET=$HOME
     echo "Defaulting to $TARGET for testing"
 else