Command-line version of Spritz
The command-line version of implementation which is inspired by a cool reading tool, Spritz.
Read from files:
`shell ./spritz.py [wpm] [<file1>, <file2>, ...] `
Read from stdin:
`shell cat sample/1-company.txt | ./spritz.py [wpm>] `
`shell pbpaste | ./spritz.py [wpm] `
If the wpm is not given, default value of wpm is 250.
## About Spritz