Added Indentation standard -> Issue#85

[rtnAyush]

Added Indentation standard using eslint config with extended airbnb and prettier plugins.

Added pre-commit hook using husky. (Demp video below)

Below is prettier config

  {
    "tabWidth": 2,
    "useTabs": false,
    "semi": true,
    "singleQuote": false,
    "trailingComma": "all",
    "printWidth": 80
 }

While applying eslint, got these many error/ warnings that i ignores during linting

    "jsx-a11y/alt-text": ["off"],
    "jsx-a11y/img-redundant-alt": ["off"],

    "react/jsx-users-react": ["off"],
    "react/react-in-jsx-scope": ["off"],
    "react/jsx-props-no-spreading": ["off"],
    "react/jsx-filename-extension":["off"],
    "no-unused-vars": ["off"],
    "no-console": ["off"],
    "no-shadow": ["off"],
    "global-require": ["off"],
    "react/prop-types": ["off"],
    "react/destructuring-assignment": ["off"],
    "import/prefer-default-export": ["off"],
    "import/extensions": ["off"],
    "import/no-dynamic-require": ["off"],
    "import/no-dynamic-requires": ["off"],
    "react/no-unescaped-entities": ["off"],
    "react/no-unknown-property": ["off"],
    "no-plusplus": ["off"],
    "camelcase": ["off"],
    "react/jsx-no-useless-fragment": ["off"],
    "no-restricted-syntax": ["off"],
    "react/jsx-no-duplicate-props": ["off"],
    "react/forbid-prop-types": ["off"],
    "import/no-extraneous-dependencies": ["off"],
    "jsx-a11y/mouse-events-have-key-events": ["off"],
    "jsx-a11y/label-has-associated-control": ["off"],
    "import/no-named-as-default-member": ["off"],
    "react/no-unstable-nested-components": ["off"],
    "jsx-a11y/anchor-is-valid": ["off"],
    "jsx-a11y/no-static-element-interactions": ["off"],
    "jsx-a11y/click-events-have-key-events": ["off"],
    "class-methods-use-this": ["off"],
    "guard-for-in": ["off"],
    "no-dupe-keys": ["off"],
    "react/style-prop-object": ["off"],
    "react/prefer-stateless-function": ["off"],
    "jsx-a11y/iframe-has-title": ["off"],
    "react/no-unused-state": ["off"],
    "jsx-a11y/no-distracting-elements": ["off"],
    "no-use-before-defined": ["off"],
    "no-use-before-define": ["off"],
    "import/no-named-as-default": ["off"],
    "react/state-in-constructor": ["off"],
    "react/no-access-state-in-setstate": ["off"],
    "react/require-default-props": ["off"],
    "react/sort-comp": ["off"],
    "import/order": ["off"],
    "react/jsx-no-bind": ["off"],
    "react/button-has-type": ["off"],
    "no-param-reassign": ["off"],
    "no-nested-ternary": ["off"]

demo.mp4