0. 更新了参考文献库 reference/metaphor.bib
1. 各章添加了内容

Signed-off-by: neofung@t400 <neosfung@gmail.com>
修改各章内容

Signed-off-by: neofung@t400 <neosfung@gmail.com>
修改了 recognition.tex 章节

Signed-off-by: neofung@t400 <neosfung@gmail.com>