Convert Website To Bootstrap

I have an ecommerce website that is non responsive. I need its architecture updated to use a bootstrap framework. The look and feel should remain the same for this phase of the project but it should become responsive for devices. I realise that this may mean some changes to how it looks on teh mobile devices but overall it should look very similar to how it currently looks. Future phases of the project will update the overall look and feel of the site but we want to do this in iterations so as not to spook existing users of teh site. The site uses api calls. We will not require you to implement the api calls. We will be able to do that here. So if you are developing the site and it needs to use an api call for part of the page to load, then for the moment you can just hardcode this information and we can integrate the api call later. There are approx 30 pages to be designed however a number of them are basically the same page but with different text information. Initially i would like to start the project with 2 or 3 pages to see how we get on. If you are interested in this please let me know.