feat: update light weight alternative

README.md

@@ -70,7 +70,7 @@ If you'd like an alternative on Windows that supports functionality similar to `
 Han Boetes and @nickthename have contributed a simple shell-script alternative for those not interested in installing a RubyGem:
 
 ``` bash
-haste() { a=$(cat); curl -X POST -s -d "$a" https://hastebin.com/documents | awk -F '"' '{print "https://hastebin.com/"$4}'; }
+haste() { curl -X POST -s -d "$(cat $1)" https://hastebin.com/documents | awk -F '"' '{print "https://hastebin.com/"$4}'; }
 ```
 
 Usage:
@@ -78,6 +78,11 @@ Usage:
 ``` bash
 cat file.txt | haste
 ```
+or:
+
+```bash
+haste file.txt
+```
 
 And a more expansive BASH option by @diethnis can be found at:
 https://github.com/diethnis/standalones/blob/master/hastebin.sh