Add boolean to Basic types and correct order of types
Merge pull request #335 from yui-knk/fix/getting_started2

Add boolean to Basic types and correct order of types
Upcases first word in 'Note'
Change '.' to ':'
Merge pull request #336 from yui-knk/fix/ch2_note

Upcases first word in 'Note'
Merge pull request #337 from yui-knk/fix/ch2_colon

Change '.' to ':'