This is not Delphi-specific folder
Nicer Delphi .gitignore

- added header with link to official documentation about Delphi filetypes
- added some missed file extensions
- made some grouping with descriptions
Some filetypes should be commented by default
One more compiler-generated binary
Additional comments
Some cleanup
Merge pull request #882 from Arvur/master

Better Delphi .gitignore