Clarify that each contributed file needs to have a proper license header and that the addition of individual copyright notices is not permitted.
JerryScript-DCO-1.0-Signed-off-by: Tilmann Scheller t.scheller@samsung.com
The current content in CONTRIBUTING.md is largely based on the "Patch Submission Process" Wiki page.
This commit also moves the DCO from the Wiki into the source tree.
In addition, clarify in README.md that contributions need to be licensed under the Apache License 2.0 and signed with the DCO.
JerryScript-DCO-1.0-Signed-off-by: Tilmann Scheller t.scheller@samsung.com