Fix broken links in the abi-gen README

packages/abi-gen/README.md

@@ -5,9 +5,9 @@ It's heavily inspired by [Geth abigen](https://github.com/ethereum/go-ethereum/w
 You can write your custom handlebars templates which will allow you to seamlessly integrate the generated code into your existing codebase with existing conventions.
 
 For an example of the generated [wrapper files](https://github.com/0xProject/0x.js/tree/development/packages/0x.js/src/contract_wrappers/generated) check out 0x.js.
-[Here](https://github.com/0xProject/0x.js/tree/development/packages/0x.js/src/contract_templates) are the templates used to generate those files.
+[Here](https://github.com/0xProject/0x.js/tree/development/packages/0x.js/contract_templates) are the templates used to generate those files.
 
-## Instalation
+## Installation
 `yarn add -g @0xproject/abi-gen`
 ## Usage
 ```
@@ -29,8 +29,8 @@ We could've just used `--abiGlob 'src/artifacts/*.json` but we wanted to exclude
 
 The abi file should be either a [Truffle](http://truffleframework.com/) contract artifact (a JSON object with an abi key) or a JSON abi array.
 ## How to write custom templates?
-The best way to get started is to copy [0x.js templates](https://github.com/0xProject/0x.js/tree/development/packages/0x.js/src/contract_templates) and start adjusting them for your needs.
-We use [handlebars](handlebarsjs.com) template engine under the hood.
+The best way to get started is to copy [0x.js templates](https://github.com/0xProject/0x.js/tree/development/packages/0x.js/contract_templates) and start adjusting them for your needs.
+We use [handlebars](http://handlebarsjs.com/) template engine under the hood.
 You need to have a master template called `contract.mustache`. it will be used to generate each contract wrapper. Although - you don't need and probably shouldn't write all your logic in a single template file. You can write [partial templates](http://handlebarsjs.com/partials.html) and as long as they are within a partials folder - they will be registered and available.
 ## Which data/context do I get in my templates?
 For now you don't get much on top of methods abi, some useful helpers and a contract name because it was enough for our use-case, but if you need something else - create a PR.