Feat: added README.md

- added authors and description of crate

Cargo.toml

@@ -1,7 +1,9 @@
 [package]
 name = "headr"
+authors = ["Minh Tran <minh@minhtrannhat.com>"]
 version = "0.1.0"
 edition = "2021"
+description = "Rust rewrite of BSD headr"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 

README.md

@@ -0,0 +1,23 @@
+# Rust rewrite of BSD head
+
+``` text
+headr 0.1.0
+    Minh Tran <minh@minhtrannhat.com>
+Rust rewrite of BSD headr
+
+Usage: headr [OPTIONS] [FILE]...
+Arguments:
+  [FILE]...  Input file(s) [default: -]
+
+Options:
+  -n, --lines <lines>  Print the first K lines instead of the first 10 with the leading '-', print all but the last K lines of each file [default: 10]
+  -c, --bytes <bytes>  print the first K bytes of each file; with the leading '-', print all but the last K lines of each file
+  -h, --help           Print help
+  -V, --version        Print version
+```
+
+## Build
+`cargo build`
+
+## Test
+`./mk-outs.sh && cargo test`