feat: add support for symbol propType

Author: KnisterPeter

Diff for: README.md

@@ -15,7 +15,7 @@ Create typescript definitions files (d.ts) from react components.
 
 * ES6 and ES7 class syntax
 * Most PropTypes
-  * any, array, bool, func, number, object, string, node, element, oneOfType, arrayOf
+  * any, array, bool, func, number, object, string, node, element, oneOfType, arrayOf, symbol
 * required PropTypes
 * instanceOf PropTypes (when using API and giving a resolve function)
 * jsdoc
@@ -39,11 +39,19 @@ npm install -g react-to-typescript-definitions
 ### CLI
 
 ```sh
-# Create a definition which exports a module named 'module-name'
-cat <some/react/component.jsx> |react2dts --name module-name
+Usage
+  $ react2dts [--module-name <name> | --top-level-module]
 
-# Create a definition which exports top level definitions
-cat <some/react/component.jsx> |react2dts --top-level-module
+react2dts reads from stdin to process a file.
+
+Options
+  --module-name, --name  name of the module to create
+  --top-level-module     if the created module should live in top-level
+
+Examples
+  $ cat <some/react/component.jsx> |react2dts --module-name module-name
+
+  $ cat <some/react/component.jsx> |react2dts --top-level-module
 ```
 
 ### API

Diff for: src/types.ts

@@ -39,6 +39,8 @@ export function get(astq: astqts.ASTQ, propertyAst: any, propTypesName: string|u
       return getTypeDeclaration(dom.create.namedTypeReference('React.ReactNode'), !required);
     case 'element':
       return getTypeDeclaration(dom.create.namedTypeReference('React.ReactElement<any>'), !required);
+    case 'symbol':
+      return getTypeDeclaration(dom.create.typeof(dom.create.namedTypeReference('Symbol')), !required);
   }
 
   const [, complexTypeName, typeAst] = getComplexTypeName(astq, propertyAst, propTypesName);

Diff for: tests/es6-class.d.ts

@@ -21,6 +21,7 @@ declare module 'component' {
         requiredAny: any;
         requiredUnion: any[] | boolean;
         requiredArrayOf: string[];
+        requiredSymbol: typeof Symbol;
     }
     export class Component extends React.Component<ComponentProps, any>{
     }

Diff for: tests/es6-class.jsx

@@ -41,4 +41,5 @@ Component.propTypes = {
 		React.PropTypes.bool
 	]).isRequired,
 	requiredArrayOf: React.PropTypes.arrayOf(React.PropTypes.string).isRequired,
+  requiredSymbol: React.PropTypes.symbol.isRequired,
 };