update README

README.md

@@ -1,7 +1,18 @@
 Flutter_Calculate
 ======
 
-A Flutter matrix calculate application.<br>
+# 计算小助手<br>
+## 功能：<br>
+### 矩阵常规计算（如矩阵相乘，相减，与某个数相乘等）<br>
+### 三角函数计算（包括度分秒，度与弧度之间的转换，sin，arctan等三角函数）<br>
+### 自定义函数（可以通过自定义函数大大简化计算工作）
+### 定积分计算
+### 多项式计算（通过求矩阵特征值）
+### 线性方程组求解
+### 矩阵转置，求上三角矩阵，求矩阵特征值
+
+## 特色：
+### 滚动状态栏，Provide全局状态管理，国际化多语言支持
 
 ## Function:<br>
 

pubspec.lock

@@ -21,7 +21,7 @@ packages:
       name: async
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.0.8"
+    version: "2.1.0"
   boolean_selector:
     dependency: transitive
     description:
@@ -108,7 +108,7 @@ packages:
       name: intl
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.15.7"
+    version: "0.15.8"
   keyboard_visibility:
     dependency: "direct main"
     description:
@@ -122,7 +122,7 @@ packages:
       name: matcher
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.12.3+1"
+    version: "0.12.5"
   meta:
     dependency: transitive
     description:
@@ -150,7 +150,7 @@ packages:
       name: pedantic
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.4.0"
+    version: "1.5.0"
   petitparser:
     dependency: transitive
     description:
@@ -171,7 +171,7 @@ packages:
       name: quiver
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.0.1"
+    version: "2.0.2"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -183,7 +183,7 @@ packages:
       name: source_span
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.5.4"
+    version: "1.5.5"
   sqflite:
     dependency: "direct main"
     description:
@@ -204,7 +204,7 @@ packages:
       name: stream_channel
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.6.8"
+    version: "2.0.0"
   string_scanner:
     dependency: transitive
     description:
@@ -232,7 +232,7 @@ packages:
       name: test_api
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.2.2"
+    version: "0.2.4"
   typed_data:
     dependency: transitive
     description:
@@ -262,5 +262,5 @@ packages:
     source: hosted
     version: "2.1.15"
 sdks:
-  dart: ">=2.1.0 <3.0.0"
+  dart: ">=2.2.0 <3.0.0"
   flutter: ">=1.2.1 <2.0.0"