Developing a module for NEM purse - Nano Wallet

NEM-Social-oriented second-generation crypto currency, with the philosophy of financial freedom, decentralization and equality of opportunity.
NEM-The platform provides users with the following types of wallets for secure storage of tokens - XEM.
NCC Standalone (Nem Comunity Client) is a standalone client. It is recommended to use it if you want to raise a 'supernode' or a full node. Installation and start-up require at least minimal skills in using the terminal;
Nano Wallet is an easy customer. Does not require the installation of additional software, downloading of the block. All requests are served by remote sites. Developed using JavaScript framework - AngularJS;
Android NEM Wallet is a mobile wallet for the Android system.
NCC in its functionality contains a very necessary module for the purse - 'Address Book', which is absent in the Nano Wallet.
The article will show you how to create a module - 'Address Book', which contains the following functional:
Creating a Contact
Editing a contact
Deleting a Contact
Sorting the contact list
Exporting Address Book
Importing Address Book