update the version and readme

Author: seamile

README.md

@@ -14,7 +14,11 @@
 
 </div>
 
-### <div align="center"><a href="README_CN.md">🇨🇳 中文版</a></div>
+<div align="center">
+    <a href="README_CN.md">🇨🇳 中文版</a>
+    ｜
+    <a>🇬🇧 English</a>
+</div>
 
 **_jsonfmt_** (JSON Formatter) is a simple yet powerful JSON processing tool.
 

README_CN.md

@@ -14,7 +14,11 @@
 
 </div>
 
-### <div align="center"><a href="README.md">🇬🇧 English</a></div>
+<div align="center">
+    <a>🇨🇳 中文版</a>
+    ｜
+    <a href="README.md">🇬🇧 English</a>
+</div>
 
 **_jsonfmt_**（JSON Formatter）是一款简单而强大的 JSON 处理工具。
 

jsonfmt/__init__.py

@@ -1 +1 @@
-__version__ = '0.2.7'
+__version__ = '0.2.8'

jsonfmt/jsonfmt.py

@@ -291,7 +291,7 @@ def parse_cmdline_args() -> ArgumentParser:
                         help='key-value pairs to delete (seperated by `;`)')
     parser.add_argument(dest='files', nargs='*',
                         help='the files that will be processed')
-    parser.add_argument('-v', dest='version', action='version',
+    parser.add_argument('-v', '--version', action='version',
                         version=__version__, help="show the version")
     return parser