grammar fixes to README, CONTRIBUTING and SUMMARY

CONTRIBUTING.md

@@ -1,7 +1,7 @@
 Contributing
 ================================================================================
 
-If you want to contribute to the [linux-insides](https://github.com/0xAX/linux-insides), you can do it with following simple rules:
+If you want to contribute to [linux-insides](https://github.com/0xAX/linux-insides), please follow these simple rules:
 
 1. Press fork button:
 
@@ -25,6 +25,6 @@ If you want to contribute to the [linux-insides](https://github.com/0xAX/linux-i
 
 **IMPORTANT**
 
-Please, do the actual changes. While you made your changes, I can merge changes from somebody else and your changes can conflict with `master` branch content. Please rebase on master everytime before you're going to push your changes and check that your branch doesn't conflict with `master`.
+Please, make the actual changes. While you made your changes, I can merge changes from somebody else and your changes can conflict with `master` branch content. Please rebase on master everytime before you're going to push your changes and check that your branch doesn't conflict with `master`.
 
 Thank you.

README.md

@@ -1,15 +1,15 @@
 linux-internals
 ===============
 
-Series of posts about linux kernel.
+A series of posts about the linux kernel.
 
-**Goal is simple** - to share my modest knowledge about linux kernel internals and help people who are interested in low-level stuff and linux kernel as me.
+**The goal is simple** - to share my modest knowledge about the internals of the linux kernel and help people who are interested in the linux kernel, and other low-level subject matter.
 
 **Questions/Suggestions**: Feel free about any questions or suggestions by pinging me at twitter [@0xAX](https://twitter.com/0xAX), adding [issue](https://github.com/0xAX/linux-internals/issues/new) or just drop me [email](anotherworldofworld@gmail.com).
 
-**Contributions**: Feel free to create issues or create pull-requests if you find issues or my English is poor.
+**Contributions**: Feel free to create issues or create pull-requests if you find any issues or my English is poor.
 
-**Please read [CONTRIBUTING.md](https://github.com/0xAX/linux-insides/blob/master/CONTRIBUTING.md) before you pushed your changes.**
+**Please read [CONTRIBUTING.md](https://github.com/0xAX/linux-insides/blob/master/CONTRIBUTING.md) before pushing any changes.**
 
 ![image](http://oi58.tinypic.com/23upobq.jpg)
 

contributors.md

@@ -20,3 +20,4 @@ Thank you to all contributors:
 * [Haddayn](https://github.com/Haddayn)
 * [Daniel Campoverde Carrión](https://github.com/alx741)
 * [Guillaume Gomez](https://github.com/GuillaumeGomez)
+* [George Horrell](https://github.com/georgehorrell)