Add license header

Hi everyone,

I used this script to add license header to all source files:

for f in **/*.{ts,js}; do
  cat license-header.txt $f > $f.new
  mv $f.new $f
done

I also add the license-header.txt file.

Feel free to comment my PR ! ;-)

changed the description

added 471 commits

• 5afa0859...4dbfcf3e - 466 commits from branch nodes/typescript:1.6
• 559f524c - Small fixes #1215 (closed)
• f4e4dfe6 - Merge branch 'small_fixes' into 'dev'
• 6323e9fb - Add github-sync
• 9d1df3f0 - Merge branch '1.6' into dev
• f79cb366 - Add a license header to all source files #1217 (closed)

Compare with previous version

added 22 commits

• f79cb366...cde67e48 - 21 commits from branch nodes/typescript:1.6
• 703ffdbc - Add license header to all source files. Fix #1217 (closed)

Compare with previous version

#1217 (closed)

move to !1251 (merged)

closed