Merge pull request #701 from feuGeneA/v2-prototype

Document use of contract_templates (take 2; based on v2-prototype, not master)

packages/contract_templates/README.md

@@ -0,0 +1,15 @@
+These templates are used with [abi-gen](https://github.com/0xProject/0x-monorepo/tree/development/packages/abi-gen).
+
+To successfully compile the generated TypeScript contract wrappers, you must:
+* Install the packages on which the main contract template directly depends: `yarn add @0xproject/base-contract @0xproject/sol-compiler @0xproject/utils @0xproject/web3-wrapper ethereum-types ethers lodash`
+* Install the packages on which the main contract template *in*directly depends: `yarn add @types/lodash`
+* Ensure that your TypeScript configuration includes the following:
+```
+"compilerOptions": {
+  "lib": ["ES2015"],
+  "typeRoots": [
+    "node_modules/@0xproject/typescript-typings/types",
+    "node_modules/@types"
+  ]
+}
+```

packages/contract_templates/contract.handlebars

@@ -1,7 +1,3 @@
-/**
- * This file is auto-generated using abi-gen. Don't edit directly.
- * Templates can be found at https://github.com/0xProject/0x-monorepo/tree/development/packages/contract_templates.
- */
 // tslint:disable:no-consecutive-blank-lines ordered-imports align trailing-comma whitespace
 // tslint:disable:no-unused-variable
 import { BaseContract } from '@0xproject/base-contract';

packages/contract_templates/partials/params.handlebars

@@ -1,3 +1,3 @@
 {{#each inputs}}
-{{name}},
+{{name}}{{#if @last}}{{else}},{{/if}}
 {{/each}}