Add: Strings and characters
Update
complete Naming Constants and Printing Constants

complete Naming Constants and Variables and Printing Constants and
Variables
Merge pull request #10 from wh1100717/gh-pages

Strings and Characters 02/03
Merge pull request #12 from honghaoz/develop

complete Naming Constants and Printing Constants
Update README.md
Update README.md
Merge pull request #11 from haolloyin/translate

Translate
add article 02/03
Capitalised "Chinese"
merged
delete the error part
delete the error page
Merge pull request #13 from honghaoz/translate-swift

Capitalised "Chinese"
Added "Functions" Chapter. Rename some files.

Added "Functions" Chapter,
Rename some files.
Each chapter has one corresponding file.
merged
Added "Functions" Chapter. Rename some files.

Added "Functions" Chapter,
Rename some files.
Each chapter has one corresponding file.
merged
Merge branch 'translate-swift' of https://github.com/honghaoz/the-swift-programming-language-in-chinese into translate-swift
Rename strings_and_characters.md to Strings_and_Characters.md