First version of Semicolons part in Basics
Correct minor bug in Comment
Working on chapter  Classes and Structures

page 226 - 236 ：The Swift Programming Language.epub
Still working..
Merge pull request #22 from JaySurplus/gh-pages

First version of Semicolons part in Basics
update content
update 02/01
add 2-19 Nested_Types

add 2-19 Nested_Types
add 3-1 AboutTheLanguageReference

add 3-1 AboutTheLanguageReference
Merge pull request #26 from dabing1022/gh-pages

add 2-19 and 3-1
update the content
Update README.md
Update README.md