add title, edit showprice/percentage button, add legend
add customize form
add bar chart template
storyboard version 1    need edit
edited
add title, legend, annotation
edit... please check the read me
transformed data by index
updated readme: storyboard url (in dropbox now), development time spending

edited the graphic design of lines, line chart, bar chart, title
the previous update is wrong. Update again, edit the storyboard url and time spending
update pdf
delete the wrong pdf
add annotation of barchart
no message
Merge branch 'update_Nina'

Conflicts:
	F2C.css
	README.md
	barchart.js
	data/apples.csv
	data/broccoli.csv
	data/butter.csv
	data/cheese.csv
	data/grapefruit.csv
	data/grapes.csv
	data/ice_cream.csv
	data/iceberg_lettuce.csv
	data/lemons.csv
	data/oranges.csv
	data/peaches.csv
	data/pears.csv
	data/potatoes.csv
	data/strawberries.csv
	data/tomatoes.csv
	data/whole_milk.csv
	linechart.js
	lines.html
	title.js