Fixed type issues

Author: samarthagarwal

README.md

@@ -2,29 +2,97 @@
 
 A dart package to interact with the WooCommerce API. It uses OAuth1.0a behind the scenes to generate the signature and URL string. It then makes calls and return the data back to the calling function.
 
-## Getting Started
+## Complete Usage Example
+```
+import 'dart:async';
 
-- Import the package
+import 'package:flutter/material.dart';
+import 'package:woocommerce_api/woocommerce_api.dart';
 
-`import 'package:woocommerce_api/woocommerce_api.dart';`
+void main() => runApp(new MyApp());
 
-- Initialize the SDK
+class MyApp extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return new MaterialApp(
+      title: 'Flutter Demo',
+      theme: new ThemeData(
+        primarySwatch: Colors.blue,
+      ),
+      home: new MyHomePage(title: 'WooCommerce API Demo'),
+    );
+  }
+}
 
-```
-WooCommerceAPI wc_api = new WooCommerceAPI(
-    "http://www.mywoocommerce.com",
-    "ck_...",
-    "cs_..."
-);
-```
+class MyHomePage extends StatefulWidget {
+  MyHomePage({Key key, this.title}) : super(key: key);
 
-- Use functions
+  final String title;
 
-```
-List _products = new List();
+  @override
+  _MyHomePageState createState() => new _MyHomePageState();
+}
+
+class _MyHomePageState extends State<MyHomePage> {
+
+  List<Widget> products = [];
+
+  Future getProducts() async {
+    WooCommerceAPI wc_api = new WooCommerceAPI(
+        "http://samarth.todaylivedeal.com",
+        "ck_2b548f9652a3468f67bbc5bdb04e48edf270a000",
+        "cs_fa349f1ba49b519ba9493eb2b64c88781b286b52"
+    );
+
+    var p = await wc_api.getAsync("products");
+    return p;
+  }
+
+  @override
+  void initState() {
+    super.initState();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return new Scaffold(
+      appBar: new AppBar(
+        title: new Text(widget.title),
+      ),
+      body: FutureBuilder(
+        future: getProducts(),
+        builder: (_, s){
+
+          if(s.data == null){
+            return Container(
+              child: Center(
+                child: Text("Loading..."),
+              ),
+            );
+          }
+
+          return ListView.builder(
+            itemCount: s.data.length,
+            itemBuilder: (_, index){
+
+              return ListTile(
+                leading: CircleAvatar(
+                  child: Image.network(s.data[index]["images"][0]["src"]),
+                ),
+                title: Text(s.data[index]["name"]),
+                subtitle: Text("Buy now for \$ " + s.data[index]["price"]),
+              );
+
+            }
+          );
+        },
+      ),
+    );
+  }
+}
 
-wc_api.getAsync("products?page=2").then((val) {  
-    List products = val;
-    print("Got " + products.length + "products received");
-});
 ```
+
+## Output
+
+![Example code's output](Screenshot.jpg)

Screenshot.jpg

@@ -52,8 +52,8 @@ class WooCommerceAPI {
     var nonce = new String.fromCharCodes(codeUnits);
     int timestamp = (new DateTime.now().millisecondsSinceEpoch / 1000).toInt();
 
-    print(timestamp);
-    print(nonce);
+    //print(timestamp);
+    //print(nonce);
 
     var method = request_method;
     var path = url.split("?")[0];
@@ -96,39 +96,31 @@ class WooCommerceAPI {
         "&" +
         Uri.encodeQueryComponent(parameterString);
 
-    print(baseString);
+    //print(baseString);
 
     var signingKey = consumerSecret + "&" + token;
-    print(signingKey);
+    //print(signingKey);
     //print(UTF8.encode(signingKey));
     var hmacSha1 =
         new crypto.Hmac(crypto.sha1, utf8.encode(signingKey)); // HMAC-SHA1
     var signature = hmacSha1.convert(utf8.encode(baseString));
 
-    print(signature);
+    //print(signature);
 
     var finalSignature = base64Encode(signature.bytes);
-    print(finalSignature);
+    //print(finalSignature);
 
     var requestUrl = "";
 
     if (containsQueryParams == true) {
-      print(url.split("?")[0] +
-          "?" +
-          parameterString +
-          "&oauth_signature=" +
-          Uri.encodeQueryComponent(finalSignature));
+      //print(url.split("?")[0] + "?" + parameterString + "&oauth_signature=" + Uri.encodeQueryComponent(finalSignature));
       requestUrl = url.split("?")[0] +
           "?" +
           parameterString +
           "&oauth_signature=" +
           Uri.encodeQueryComponent(finalSignature);
     } else {
-      print(url +
-          "?" +
-          parameterString +
-          "&oauth_signature=" +
-          Uri.encodeQueryComponent(finalSignature));
+      //print(url + "?" +  parameterString + "&oauth_signature=" + Uri.encodeQueryComponent(finalSignature));
       requestUrl = url +
           "?" +
           parameterString +
@@ -139,7 +131,7 @@ class WooCommerceAPI {
     return requestUrl;
   }
 
-  Future<Response> getAsync(String endPoint) async {
+  Future<dynamic> getAsync(String endPoint) async {
 
     var url = this._getOAuthURL("GET", endPoint);
 
@@ -149,7 +141,7 @@ class WooCommerceAPI {
 
   }
 
-  Future<Response> postAsync(String endPoint, Object data) async {
+  Future<dynamic> postAsync(String endPoint, Object data) async {
 
     var url = this._getOAuthURL("POST", endPoint);