A simple typo.
wo -> no.
id/link fix
Merge pull request #51 from hiroshi-manabe/typo-destructor

A simple typo.
Merge pull request #52 from hiroshi-manabe/typo-wo

wo -> no.
Merge pull request #53 from tzik/link

id/link fix
Start working to make this book complete!
By finishing The Basic Concepts.
To the glory I dreamed of.