Adds README and changes main file

README.md

@@ -0,0 +1,16 @@
+# vcf-reader
+
+Simple app to convert `vcf` file to `json` format.
+
+## Usage
+
+```
+$ path/to/main /path/to/file.vcf
+```
+
+Optionally, save result to file.
+
+```
+$ path/to/main /path/to/file.vcf > transformed.json
+$ cat transformed.json | jq
+```

main

@@ -1,3 +1,4 @@
+#!/usr/bin/env php
 <?php
 
 if(!empty($argv[1])) {