update readme

README.md

@@ -1,8 +1,10 @@
 # go-hashfiles
 
-This action is to compute the SHA256 checksum of specified files.
+This action is to compute the SHA256 hash of specified files.
 
-**NOTE:** This action is written in Go. Please make sure the `runs-on` runner supports running Go actions.
+The hash function is based on [nektos/act](https://github.com/nektos/act/blob/ac5dd8feb876d37ae483376a137c57383577dace/pkg/exprparser/functions.go#L183). Thanks!
+
+**NOTE:** This action is written in Go. Please setup the Go environment before running this action or use a runner with Go environment installed.
 
 ## Usage
 
@@ -14,7 +16,7 @@ This action is to compute the SHA256 checksum of specified files.
     workdir: ''
 
     # The patterns used to match files.
-    # Multiple patterns should be seperated with `\n`
+    # Multiple patterns should be seperated by `\n`
     patterns: ''
 ```
 
@@ -22,11 +24,16 @@ This action is to compute the SHA256 checksum of specified files.
 
 |Output Item|Description|
 |---|---|
-|hash|The computed checksum|
+|hash|The computed hash result|
 |matched-files|The files matched by the patterns|
 
 ## Example
 ``` yml
+# Setup the Go environment. This step can be skipped if Go has been installed.
+- uses: actions/setup-go@v3
+  with:
+    go-version: '1.20'
+
 - uses: actions/go-hashfiles@v0.0.1
   id: get-hash
   with: 
@@ -34,6 +41,7 @@ This action is to compute the SHA256 checksum of specified files.
       go.sum
       ./admin/*
       **/package-lock.json
+
 - name: Echo hash
   run: echo ${{ steps.get-hash.outputs.hash }}
 ```

action.yml

@@ -1,5 +1,5 @@
 name: 'Go HashFiles'
-description: 'Compute the SHA256 checksum of specified files'
+description: 'Compute the SHA256 hash of specified files'
 inputs:
   workdir:
     description: >
@@ -13,7 +13,7 @@ inputs:
     required: true
 outputs:
   hash:
-    description: 'The computed checksum'
+    description: 'The computed hash result'
   matched-files:
     description: 'The files matched by the patterns'
 runs: