Merge pull request #4 from wesleylancel/scratch-curriculum
Merge pull request #6 from Marrije/scratch-curriculum
Merge pull request #20 from thomasmattheussen/scratch-curriculum
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Fix typo in CONTRIBUTING
Merge pull request #22 from Helgenen/master

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Update code in contributing guide
Add build script
Fix URL in example pull request
Add build instructions to README
Update README
[en-GB] Fixed typo in lesson 3