Write the documentation

[ganeshhubale]

It should be hosted using readthedocs.io

[ganeshhubale]

please add:

• Feature
  • Export URLs to CSV file:
• Example:

$ readit --export
or
$ readit -e 

• Command line options:

Usage: readit [OPTIONS] [INSERT]...

  Readit - Command-line bookmark manager tool.

Options:
  -a, --add TEXT...     Add URLs with space-separated
  -t, --tag TEXT...     Add Tag with space-separated URL
  -d, --delete TEXT     Remove a URL of particular ID
  -c, --clear TEXT...   Clear bookmarks
  -u, --update TEXT...  Update a URL for specific ID
  -s, --search TEXT     Search all bookmarks by Tag
  -v, --view TEXT...    Show bookmarks
  -o, --openurl TEXT    Open URL in Browser
  -V, --version         Check latest version
  -e, --export TEXT...  Export URLs in csv file
  --help                Show this message and exit.

[shitalmule04]

@ganeshhubale, done at #81