Improve README description

Author: nhooyr

README.md

@@ -5,7 +5,7 @@
 [![Codecov](https://img.shields.io/codecov/c/github/cdr/slog.svg?color=success)](https://codecov.io/gh/cdr/slog)
 [![CI](https://img.shields.io/circleci/build/github/cdr/slog?label=ci)](https://github.com/cdr/slog/commits/master)
 
-slog is a minimal and idiomatic structured logging library for Go.
+slog is a minimal structured logging library for Go.
 
 ## Install
 

go.mod

@@ -10,7 +10,6 @@ require (
 	go.coder.com/go-tools v0.0.0-20190317003359-0c6a35b74a16
 	go.opencensus.io v0.22.1
 	golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3
-	golang.org/x/tools v0.0.0-20190311212946-11955173bddd
 	golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7
 	gotest.tools/gotestsum v0.3.5
 	mvdan.cc/sh v2.6.4+incompatible