#5 create new trecipe component

[shizuko-akamoto]

Changes:

• Created a Button component with configurable button text and optional fontawesome icon, font size. Example use of Button component: For icon names, refer to FontAwesome website, and Step 5 in this link: https://www.digitalocean.com/community/tutorials/how-to-use-font-awesome-5-with-react <Button text="Create New" icon="plus-circle" fontSize=16/>

• Defined color variables for website theme in src/stylesheets/colors.scss

• Added some new dependencies

1. Font awesome related packages
2. Lodash: for using js utility methods
3. Enzyme: for use in component unit testing (allows just rendering one component and snapshot testing) https://scotch.io/tutorials/testing-react-components-with-enzyme-and-jest

Closes #5

[shizuko-akamoto]

LGTM, but it will be good if we can make the font scalable.

No problemo, will do. Edit: Added