Minor typos in the README

README.md

 
  - Erik van der Zalm ([@ErikZalm](https://github.com/ErikZalm))
  - [@daid](https://github.com/daid)
- 
+
 Sprinters lead developers are Kliment and caru.
 Grbls lead developer is Simen Svale Skogsrud.
 Sonney Jeon (Chamnit) improved some parts of grbl
   - Bradley Feldman,
   - and others...
 
-## Licence
+## License
 
-Marlin is published unde the [GPL license](/Documentation/COPYING.md) because I believe in open development.
+Marlin is published under the [GPL license](/Documentation/COPYING.md) because I believe in open development.
 Please do not use this code in products (3D printers, CNC etc) that are closed source or are crippled by a patent.
 
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