Fix for issue 4

[devsks]

I have added the 'type' column in respective README.md files and added values to already added books.

[sourabhtk37]

cc: @manuraj17

[devsks]

@manuraj17 Any reasons for not merging this PR?

[manuraj17]

@devsks I was just thinking over the type column, although I feel it might be not of that great use I also see that it could be useful at some time, so I am just keeping it on hold to see if this will be required. Thanks for the work though, I will keep this issue open and if need comes I will merge it, you can have this branch rebased then. Ok?

[devsks]

ok @manuraj17 no problem. But don't you think that if we add the "type" column later on then we will have to add type values of existing books? we will have to add a lot of values to fill the "type" column.

[manuraj17]

@devsks You are right, it will be a task. I will get this sorted soon.