Update readme and license file.

README.md

@@ -11,7 +11,7 @@
 
 ## Introduction
 
-Excelize is a library written in pure Golang and providing a set of function that allow you to write to and read from XLSX files. Support read and write XLSX file geterated by Office Excel 2007 and later. The full API docs can be viewed using go’s built in documentation tool, or online at [godoc.org](https://godoc.org/github.com/Luxurioust/excelize).
+Excelize is a library written in pure Golang and providing a set of functions that allow you to write to and read from XLSX files. Support reads and writes XLSX file generated by Office Excel 2007 and later. The full API docs can be seen using go's built-in documentation tool, or online at [godoc.org](https://godoc.org/github.com/Luxurioust/excelize).
 
 ## Basic Usage
 
@@ -80,7 +80,7 @@ func main() {
 
 Contributions are welcome! Open a pull request to fix a bug, or open an issue to discuss a new feature or change.
 
-### Credits
+## Credits
 
 Some struct of XML originally by [tealeg/xlsx](https://github.com/tealeg/xlsx).