supported_extensions = ['.md', '.markdown']

# The default filenames when no file is provided
default_filenames = map(lambda ext: 'README' + ext, supported_extensions)

supported_extensions = [
    '.markdown', '.mdown', '.mkdn', '.md',
    '.textile',
    '.rdoc',
    '.org',
    '.creole',
    '.mediawiki', '.wiki',
    '.rst',
    '.asciidoc', '.adoc', '.asc',
    '.pod',
]


# The default filenames when no file is provided
default_filenames = map(lambda ext: 'README' + ext, supported_extensions)

Add the GitHub-supported format extensions.
Add the GitHub-supported format extensions.

- supported_extensions = ['.md', '.markdown']
+ supported_extensions = [
+     '.markdown', '.mdown', '.mkdn', '.md',
+     '.textile',
+     '.rdoc',
+     '.org',
+     '.creole',
+     '.mediawiki', '.wiki',
+     '.rst',
+     '.asciidoc', '.adoc', '.asc',
+     '.pod',
+ ]
+ 
  
  # The default filenames when no file is provided
  default_filenames = map(lambda ext: 'README' + ext, supported_extensions)
  
Add the GitHub-supported format extensions.
## Code Before:
supported_extensions = ['.md', '.markdown']

# The default filenames when no file is provided
default_filenames = map(lambda ext: 'README' + ext, supported_extensions)

## Instruction:
Add the GitHub-supported format extensions.
## Code After:
supported_extensions = [
    '.markdown', '.mdown', '.mkdn', '.md',
    '.textile',
    '.rdoc',
    '.org',
    '.creole',
    '.mediawiki', '.wiki',
    '.rst',
    '.asciidoc', '.adoc', '.asc',
    '.pod',
]


# The default filenames when no file is provided
default_filenames = map(lambda ext: 'README' + ext, supported_extensions)
