add usage

print.go

@@ -0,0 +1,15 @@
+package main
+
+import "fmt"
+
+func bold(str string) string {
+	return fmt.Sprintf("\x1b[1m%s\x1b[0m", str)
+}
+
+func success(str string) string {
+	return fmt.Sprintf("\x1b[58;2;26;221;120m%s\x1b[0m", str)
+}
+
+func error(str string) string {
+	return fmt.Sprintf("\x1b[58;2;221;26;120m%s\x1b[0m", str)
+}

usage.go

@@ -0,0 +1,33 @@
+package main
+
+import "fmt"
+
+func usage() {
+	fmt.Printf(`
+%s
+	cliverage - print human-readable golang code coverage
+
+%s
+	%s codepath coverfile [filepath]
+
+%s
+	codepath
+		Path to where lives your code
+
+	coverfile
+		Path to the coverage file generated by "go test -coverprofile".
+
+	filepath
+		Optional path to a file (relative to %s).
+
+%s
+	Adrien Marquès (aka. xdrm-brackets)
+`,
+		bold("NAME"),
+		bold("SYNOPSIS"),
+		bold("cliverage"),
+		bold("ARGUMENTS"),
+		bold("codepath"),
+		bold("AUTHORS"),
+	)
+}