Add logo to docs

Signed-off-by: Ahmet Alp Balkan <[email protected]>

README.md

@@ -1,3 +1,6 @@
+<img src="assets/logo/horizontal/color/krew-horizontal-color.png" width="480"
+  alt="Krew logo"/>
+
 # krew
 
 [![Build Status](https://travis-ci.org/kubernetes-sigs/krew.svg?branch=master)](https://travis-ci.org/kubernetes-sigs/krew)
@@ -9,6 +12,7 @@
 
 krew is the package manager for kubectl plugins.
 
+
 ## What is krew?
 
 krew is a tool that makes it easy to use [kubectl

docs/KREW_LOGO.md

@@ -0,0 +1,24 @@
+# Krew logo
+
+Krew logo is designed by [@iboonox](https://github.com/iboonox) and it is
+licensed under Apache 2.0 license.
+
+## Available logo types
+
+| horizontal | stacked | icon |
+|--|--|--|
+| ![](../assets/logo/horizontal/color/krew-horizontal-color.png) | ![](../assets/logo/stacked/color/krew-stacked-color.png) | ![](../assets/logo/icon/color/krew-icon-color.png)  |
+
+## Logo assets
+
+| Type | Color Scheme | Format |
+|--|--|--|
+| horizontal (text next to the icon) | colored | [png](../assets/logo/horizontal/color/krew-horizontal-color.png)  [svg](../assets/logo/horizontal/color/krew-horizontal-color.svg) |
+| horizontal (text next to the icon) | black | [png](../assets/logo/horizontal/black/krew-horizontal-black.png)  [svg](../assets/logo/horizontal/black/krew-horizontal-black.svg) |
+| horizontal (text next to the icon) | white | [png](../assets/logo/horizontal/white/krew-horizontal-white.png)  [svg](../assets/logo/horizontal/white/krew-horizontal-black.svg) |
+| stacked (text below the icon) | colored | [png](../assets/logo/stacked/color/krew-stacked-color.png)  [svg](../assets/logo/stacked/color/krew-stacked-color.svg) |
+| stacked (text below the icon) | black | [png](../assets/logo/stacked/black/krew-stacked-black.png)  [svg](../assets/logo/stacked/black/krew-stacked-black.svg) |
+| stacked (text below the icon) | white | [png](../assets/logo/stacked/white/krew-stacked-white.png)  [svg](../assets/logo/stacked/white/krew-stacked-black.svg) |
+| icon | colored | [png](../assets/logo/icon/color/krew-icon-color.png)  [svg](../assets/logo/icon/color/krew-icon-color.svg) |
+| icon | black | [png](../assets/logo/icon/black/krew-icon-black.png)  [svg](../assets/logo/icon/black/krew-icon-black.svg) |
+| icon | white | [png](../assets/logo/icon/white/krew-icon-white.png)  [svg](../assets/logo/icon/white/krew-icon-black.svg) |