Downlad zip
Unzip and go into the folder gulp-example-master.
run command npm install.
create a folder dist in the root folder and another folder js inside of dist.

to run each example go to teh respective folders and run gulp commands as mentioned below

example_1: gulp
example_2: gulp task1
example_3: gulp task1
example_4: gulp task1
example_5: gulp scripts

To know more about what the code does please visit https://medium.com/@shashankkaushik/reactjs-blog-the-one-where-you-gulp-it-up-212053199b69#.17zeghdii