docs: create README.md

Author: xhofe

README.md

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+## ipa_renamer
+
+A command line tool for renaming your ipa files quickly and easily.
+
+### Usage
+```bash
+ipa_renamer 0.0.1
+A command line tool for renaming your ipa files quickly
+
+USAGE:
+    ipa_renamer.exe [OPTIONS] <GLOB> [TEMPLATE]
+
+ARGS:
+    <GLOB>        file path pattern to rename
+    <TEMPLATE>    Name template for the new file [default: $raw@$CFBundleIdentifier]
+
+OPTIONS:
+    -h, --help           Print help information
+    -o, --out <OUT>      The dir to save the renamed files [default: renamed]
+    -t, --temp <TEMP>    The temp dir for the extracted ipa file [default: ./temp]
+    -V, --version        Print version information
+```