updated docs to show npm and bower install examples and to reflect the bucketsjs package name
updated docs to show npm and bower install examples and to reflect the bucketsjs package name

mauriciosantos/Buckets-JS,ZJU-Shaonian-Biancheng-Tuan/Buckets-JS,dpatlut/Buckets-JS,ZJU-Shaonian-Biancheng-Tuan/Buckets-JS,mauriciosantos/Buckets-JS,shusenl/Buckets-JS,shusenl/Buckets-JS,dpatlut/Buckets-JS