Localize prices to NC on Web

[amitness]

The idea is to implement a simple browser extension that:

• Fetches latest currency exchange rate in the morning and caches it
• Converts all prices on webpages in foreign currency to equivalent NC.

For example, when you visit Amazon.com, you'll get all prices in $X replaced with Rs. XXX.

[amitness]

The repo is here: https://github.com/amitness/nc . Feel free to fork.