Add Deployer docs to website

packages/website/md/docs/deployer/installation.md

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+**Install**
+
+```bash
+npm install @0xproject/deployer --save
+```
+
+**Import**
+
+```javascript
+import { Deployer, Compiler } from '@0xproject/deployer';
+```
+
+or
+
+```javascript
+var Deployer = require('@0xproject/deployer').Deployer;
+var Compiler = require('@0xproject/deployer').Compiler;
+```

packages/website/md/docs/deployer/introduction.md

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+Welcome to the [Deployer](https://github.com/0xProject/0x-monorepo/tree/development/packages/deployer) documentation! Deployer is a tool for compiling and deploying Solidity smart contracts with ease.
+
+It serves a similar purpose to the [Truffle framework](http://truffleframework.com/), but for intermediate to advanced Solidity developers that require greater configurability and reliability.
+
+Deployer has the following advantages over Truffle:
+
+*   Deploy each smart contract with a specific version of Solidity
+*   Improved artifact files:
+    *   Properly segregated artifacts to support storing different versions of smart contract deployed on different networks.
+    *   Storage of contructor args and contract source code
+*   An easy to maintain codebase: TypeScript + Single package
+*   Allows you to specify the deployer address
+*   Migrations that work with `async/await`
+*   Migrations that can be written synchronously in order to guarentee deterministic contract addresses
+*   No race conditions when running migrations.
+
+Deployer can be used as a command-line tool or as an imported module.

packages/website/md/docs/deployer/usage.md

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+### CLI Usage
+
+```bash
+node ./node_modules/@0xproject/deployer/lib/cli.js --help
+cli.js [command]
+
+Commands:
+  cli.js compile  compile contracts
+  cli.js deploy   deploy a single contract with provided arguments
+
+Options:
+  --version          Show version number                               [boolean]
+  --contracts-dir    path of contracts directory to compile
+              [string] [default: "/Users/leonidlogvinov/Dev/0x/contracts"]
+  --network-id       mainnet=1, kovan=42, testrpc=50      [number] [default: 50]
+  --should-optimize  enable optimizer                 [boolean] [default: false]
+  --artifacts-dir    path to write contracts artifacts to
+       [string] [default: "/Users/leonidlogvinov/Dev/0x/build/artifacts/"]
+  --jsonrpc-port     port connected to JSON RPC         [number] [default: 8545]
+  --gas-price        gasPrice to be used for transactions
+                                                [string] [default: "2000000000"]
+  --account          account to use for deploying contracts             [string]
+  --help             Show help                                         [boolean]
+```
+
+### API Usage
+
+#### Migrations
+
+You might want to write a migration scripts (similar to `truffle migrate`), that deploys multiple contracts and configures them. Below you'll find a simple example of such a script to help you get started.
+
+```typescript
+import { Deployer } from '@0xproject/deployer';
+import * as path from 'path';
+
+const deployerOpts = {
+    artifactsDir: path.resolve('src', 'artifacts'),
+    jsonrpcUrl: 'http://localhost:8545',
+    networkId: 50,
+    defaults: {
+        gas: 1000000,
+    },
+};
+
+const deployer = new Deployer(deployerOpts);
+
+(async () => {
+    const etherToken = await deployer.deployAndSaveAsync('WETH9');
+})().catch(console.log);
+```
+
+A more sophisticated example can be found [here](https://github.com/0xProject/0x-monorepo/tree/development/packages/contracts/migrations)