diff --git a/.gitattributes b/.gitattributes
index 391f0a4..6313b56 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1 @@
-* text=auto
-*.js text eol=lf
+* text=auto eol=lf
diff --git a/.gitignore b/.gitignore
index 3c3629e..239ecff 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 node_modules
+yarn.lock
diff --git a/index.js b/index.js
index ba41e4e..bad4359 100644
--- a/index.js
+++ b/index.js
@@ -1,11 +1,12 @@
 'use strict';
-const isPromise = x => (
-	x instanceof Promise ||
+
+const isPromise = input => (
+	input instanceof Promise ||
 	(
-		x !== null &&
-		typeof x === 'object' &&
-		typeof x.then === 'function' &&
-		typeof x.catch === 'function'
+		input !== null &&
+		typeof input === 'object' &&
+		typeof input.then === 'function' &&
+		typeof input.catch === 'function'
 	)
 );
 
diff --git a/readme.md b/readme.md
index 15edbf2..0e0e481 100644
--- a/readme.md
+++ b/readme.md
@@ -12,7 +12,7 @@ Can be useful if you need to create a fast path for a synchronous operation.
 ## Install
 
 ```
-$ npm install --save p-is-promise
+$ npm install p-is-promise
 ```
 
 
diff --git a/test.js b/test.js
index 42c7b5a..3690ff6 100644
--- a/test.js
+++ b/test.js
@@ -2,7 +2,7 @@ import test from 'ava';
 import Bluebird from 'bluebird';
 import isPromise from '.';
 
-test(t => {
+test('main', t => {
 	t.true(isPromise(Promise.resolve()));
 	t.true(isPromise(global.Promise.resolve()));
 	t.true(isPromise(Bluebird.resolve()));