add lang.

src/lang.js

+define(function(require) {
+
+    return {
+        toolbox: {
+            brush: {
+                title: {
+                    rect: '矩形选择',
+                    polygon: '圈选',
+                    lineX: '横向选择',
+                    lineY: '纵向选择',
+                    keep: '保持选择',
+                    clear: '清除选择'
+                }
+            },
+            dataView: {
+                title: '数据视图',
+                lang: ['数据视图', '关闭', '刷新']
+            },
+            dataZoom: {
+                title: {
+                    zoom: '区域缩放',
+                    back: '区域缩放还原'
+                }
+            },
+            magicType: {
+                title: {
+                    line: '切换为折线图',
+                    bar: '切换为柱状图',
+                    stack: '切换为堆叠',
+                    tiled: '切换为平铺'
+                }
+            },
+            restore: {
+                title: '还原'
+            },
+            saveAsImage: {
+                title: '保存为图片',
+                lang: ['右键另存为图片']
+            }
+        }
+    };
+
+});
\ No newline at end of file

src/langEN.js

+define(function(require) {
+
+    return {
+        toolbox: {
+            brush: {
+                title: {
+                    rect: 'Box Select',
+                    polygon: 'Lasso Select',
+                    lineX: 'Horizontally Select',
+                    lineY: 'Vertically Select',
+                    keep: 'Keep Selections',
+                    clear: 'Clear Selections'
+                }
+            },
+            dataView: {
+                title: 'Data View',
+                lang: ['Data View', 'Close', 'Refresh']
+            },
+            dataZoom: {
+                title: {
+                    zoom: 'Zoom',
+                    back: 'Zoom Reset'
+                }
+            },
+            magicType: {
+                title: {
+                    line: 'Switch to Line Chart',
+                    bar: 'Switch to Bar Chart',
+                    stack: 'Stack',
+                    tiled: 'Tile'
+                }
+            },
+            restore: {
+                title: 'Restore'
+            },
+            saveAsImage: {
+                title: 'Save as Image',
+                lang: ['Right Click to Save Image']
+            }
+        }
+    };
+
+});
\ No newline at end of file