Merge pull request #195 from Sue-Yi-FAN/master

modify the parse data format
Merge pull request #198 from Sue-Yi-FAN/master

add needed tool in README.md
Merge pull request #199 from Sue-Yi-FAN/master

correct the Bug in Parser.js
Modify the fetch.js to get target.
Merge pull request #200 from promise82114/master

Modify the fetch.js to get target.
modify back-end server to accumulate new data and drop old data from database