diff --git a/README.md b/README.md
index 110344c..f759773 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,8 @@ demenstrate the beauty of math.
+...
+
#函数
**定义:**一般的，在一个变化过程中，假设有两个变量x、y，如果对于任意一个x都有唯一确定的一个y和它对应，那么就称y是x的函数，其中x是自变量，y是因变量，x的取值范围叫做这个函数的定义域，相应y的取值范围叫做函数的值域.
**特性:**
diff --git a/base/base.iml b/base/base.iml
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diff --git a/beauty-of-math.iml b/beauty-of-math.iml
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diff --git a/bom/bom.iml b/bom/bom.iml
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diff --git a/build.gradle b/build.gradle
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--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ buildscript {
}
dependencies {
- classpath 'com.android.tools.build:gradle:2.2.1'
+ classpath 'com.android.tools.build:gradle:2.2.2'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
diff --git a/demo/demo.iml b/demo/demo.iml
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diff --git a/settings.gradle b/settings.gradle
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-include ':demo', ':bom', ':base'