Update the summary

README.md

@@ -23,9 +23,10 @@ fzf is a general-purpose command-line fuzzy finder.
 
 <img src="https://raw.githubusercontent.com/junegunn/i/master/fzf-preview.png" width=640>
 
-It's an interactive Unix filter for command-line that can be used with any
-list; files, command history, processes, hostnames, bookmarks, git commits,
-etc.
+It's an interactive filter program for any kind of list; files, command
+history, processes, hostnames, bookmarks, git commits, etc. It implements
+a "fuzzy" matching algorithm, so you can quickly type in patterns with omitted
+characters and still get the results you want.
 
 Pros
 ----

src/options.go

@@ -16,7 +16,15 @@ import (
 	"github.com/rivo/uniseg"
 )
 
-const Usage = `usage: fzf [options]
+const Usage = `fzf is an interactive filter program for any kind of list.
+
+It implements a "fuzzy" matching algorithm, so you can quickly type in patterns
+with omitted characters and still get the results you want.
+
+Project URL: https://github.com/junegunn/fzf
+Author: Junegunn Choi <junegunn.c@gmail.com>
+
+Usage: fzf [options]
 
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