Move 0x.js temnplates to 0x.js instead of having them as a separate package

packages/0x.js/contract_templates/contract.mustache

@@ -0,0 +1,25 @@
+/**
+ * This file is auto-generated using abi-gen. Don't edit directly.
+ * Templates can be found at https://github.com/0xProject/0x.js/tree/development/packages/abi-gen-templates.
+ */
+import {TxData, TxDataPayable} from '@0xproject/types';
+import {classUtils, promisify} from '@0xproject/utils';
+import {BigNumber} from 'bignumber.js';
+import * as Web3 from 'web3';
+
+import {BaseContract} from './base_contract';
+
+export class {{contractName}}Contract extends BaseContract {
+{{#each methods}}
+    {{#this.constant}}
+    {{> call contractName=../contractName}}
+    {{/this.constant}}
+    {{^this.constant}}
+    {{> tx contractName=../contractName}}
+    {{/this.constant}}
+{{/each}}
+    constructor(web3ContractInstance: Web3.ContractInstance, defaults: Partial<TxData>) {
+        super(web3ContractInstance, defaults);
+        classUtils.bindAll(this, ['web3ContractInstance', 'defaults']);
+    }
+} // tslint:disable:max-file-line-count

packages/0x.js/contract_templates/partials/call.mustache

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+public {{this.name}} = {
+    async callAsync(
+    {{> typed_params inputs=inputs}}
+        defaultBlock?: Web3.BlockParam,
+    ): Promise<{{> return_type outputs=outputs}}> {
+        const self = this as {{contractName}}Contract;
+        const result = await promisify<{{> return_type outputs=outputs}}>(
+            self.web3ContractInstance.{{this.name}}.call,
+            self.web3ContractInstance,
+        )(
+            {{> params inputs=inputs}}
+        );
+        return result;
+    },
+};

packages/0x.js/contract_templates/partials/params.mustache

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+{{#each inputs}}
+{{name}},
+{{/each}}

packages/0x.js/contract_templates/partials/return_type.mustache

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+{{#singleReturnValue}}
+{{#returnType outputs.0.type}}{{/returnType}}
+{{/singleReturnValue}}
+{{^singleReturnValue}}
+[{{#each outputs}}{{#returnType type}}{{/returnType}}{{#unless @last}}, {{/unless}}{{/each}}]
+{{/singleReturnValue}}

packages/0x.js/contract_templates/partials/tx.mustache

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+public {{this.name}} = {
+    async sendTransactionAsync(
+    {{> typed_params inputs=inputs}}
+    {{#this.payable}}
+        txData: TxDataPayable = {},
+    {{/this.payable}}
+    {{^this.payable}}
+        txData: TxData = {},
+    {{/this.payable}}
+    ): Promise<string> {
+        const self = this as {{contractName}}Contract;
+        const txDataWithDefaults = await self.applyDefaultsToTxDataAsync(
+            txData,
+            self.{{this.name}}.estimateGasAsync.bind(
+                self,
+                {{> params inputs=inputs}}
+            ),
+        );
+        const txHash = await promisify<string>(
+            self.web3ContractInstance.{{this.name}}, self.web3ContractInstance,
+        )(
+            {{> params inputs=inputs}}
+            txDataWithDefaults,
+        );
+        return txHash;
+    },
+    async estimateGasAsync(
+    {{> typed_params inputs=inputs}}
+        txData: TxData = {},
+    ): Promise<number> {
+        const self = this as {{contractName}}Contract;
+        const txDataWithDefaults = await self.applyDefaultsToTxDataAsync(
+            txData,
+        );
+        const gas = await promisify<number>(
+            self.web3ContractInstance.{{this.name}}.estimateGas, self.web3ContractInstance,
+        )(
+            {{> params inputs=inputs}}
+            txDataWithDefaults,
+        );
+        return gas;
+    },
+    getABIEncodedTransactionData(
+    {{> typed_params inputs=inputs}}
+        txData: TxData = {},
+    ): string {
+        const self = this as {{contractName}}Contract;
+        const abiEncodedTransactionData = self.web3ContractInstance.{{this.name}}.getData();
+        return abiEncodedTransactionData;
+    },
+};

packages/0x.js/contract_templates/partials/typed_params.mustache

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+{{#each inputs}}
+    {{name}}: {{#parameterType type}}{{/parameterType}},
+{{/each}}