Category filter - Githubissues

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[x] Add more enhancement to Redux store
[x] Built a book filter and call it filer
[x] Create the CHANGE_FILTER action in actions/index.js
[x] Create a filter.js reducer which modifies filter in the Redux store. It should default to All.
[x] Implement the CategoryFilter component
[x] Setup select box render with filter categories.
[x] Merge the book categories with the All option in the select box.
[x] Keep the filter value in the Redux store
[x] Render the CategoryFilter component in the BooksList component.
[x] Implement the handle filter change method which modifies the filter state in the Redux store.
[x] Pass it down as a prop to CategoryFilter.
[x] Implement a conditional method which decides which books should be shown in the table depending on the filter value from Redux store.

raheebwa / mv-react-bookstore