add coconutBattery to System Related Tools

README.md

@@ -726,6 +726,7 @@ Any comments, suggestions? [Let us know!](https://github.com/jaywcjlove/awesome-
 * [AppCleaner](http://freemacsoft.net/appcleaner/) - Small application which allows you to thoroughly uninstall unwanted apps. ![Freeware][Freeware Icon]
 * [Cleaner for Xcode](https://github.com/waylybaye/XcodeCleaner) - Helps make your Xcode faster by removing unwanted and deprecated files. [![Open-Source Software][OSS Icon]](https://github.com/waylybaye/XcodeCleaner) ![Freeware][Freeware Icon]
 * [Coolant](https://coolantformac.com) - Menubar app that lets you know when an app is consuming 100% CPU or more than a gigabyte of memory (or any arbitrary limits you choose).
+* [coconutBattery](https://www.coconut-flavour.com/coconutbattery/) - Shows live information about the battery in your Mac. Includes: manufacture date, capacity, cycle count, battery status, temperature, discharging power.
 * [DaisyDisk](https://daisydiskapp.com/) - Gives a great overview of disk usage. Can also make more disk-space available by cleaning up your disk.
 * [FruitJuice](http://fruitjuiceapp.com) - Will let you know how long to stay unplugged each day to keep your battery healthy. [![App Store][app-store Icon]](https://itunes.apple.com/app/fruitjuice-battery-health/id671736912)
 * [gfxCardStatus](https://gfx.io/) - Unobtrusive menu bar app for OS X that allows MacBook Pro users to see which apps are affecting their battery life by using the more power-hungry graphics. ![Freeware][Freeware Icon]