update pom.xml, better way to set compiler.source & compiler.target

pom.xml

@@ -1,64 +1,63 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	<modelVersion>4.0.0</modelVersion>
-	<groupId>com.github.stuxuhai</groupId>
-	<artifactId>hdata</artifactId>
-	<version>0.2.8</version>
-	<name>HData</name>
-	<packaging>pom</packaging>
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>com.github.stuxuhai</groupId>
+  <artifactId>hdata</artifactId>
+  <version>0.2.8</version>
+  <name>HData</name>
+  <packaging>pom</packaging>
 
-	<properties>
-		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-	</properties>
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <maven.compiler.source>1.7</maven.compiler.source>
+    <maven.compiler.target>1.7</maven.compiler.target>
+  </properties>
 
-	<dependencyManagement>
-		<dependencies>
-			<dependency>
-				<groupId>com.github.stuxuhai</groupId>
-				<artifactId>hdata-api</artifactId>
-				<version>${project.version}</version>
-			</dependency>
-			<dependency>
-				<groupId>com.github.stuxuhai</groupId>
-				<artifactId>hdata-core</artifactId>
-				<version>${project.version}</version>
-			</dependency>
-		</dependencies>
-	</dependencyManagement>
+  <dependencyManagement>
+    <dependencies>
+      <dependency>
+        <groupId>com.github.stuxuhai</groupId>
+        <artifactId>hdata-api</artifactId>
+        <version>${project.version}</version>
+      </dependency>
+      <dependency>
+        <groupId>com.github.stuxuhai</groupId>
+        <artifactId>hdata-core</artifactId>
+        <version>${project.version}</version>
+      </dependency>
+    </dependencies>
+  </dependencyManagement>
 
-	<build>
-		<plugins>
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-compiler-plugin</artifactId>
-				<version>3.5.1</version>
-				<configuration>
-					<source>1.7</source>
-					<target>1.7</target>
-					<encoding>UTF8</encoding>
-				</configuration>
-			</plugin>
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-jar-plugin</artifactId>
-				<version>2.6</version>
-			</plugin>
-		</plugins>
-	</build>
+  <build>
+    <pluginManagement>
+      <plugins>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-compiler-plugin</artifactId>
+          <version>3.5.1</version>
+        </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-jar-plugin</artifactId>
+          <version>2.6</version>
+        </plugin>
+      </plugins>
+    </pluginManagement>
+  </build>
 
-	<modules>
-		<module>hdata-api</module>
-		<module>hdata-core</module>
-		<module>hdata-console</module>
-		<module>hdata-csv</module>
-		<module>hdata-jdbc</module>
-		<module>hdata-ftp</module>
-		<module>hdata-http</module>
-		<module>hdata-kafka</module>
-		<module>hdata-hdfs</module>
-		<module>hdata-hive</module>
-		<module>hdata-hbase</module>
-		<module>hdata-mongodb</module>
-		<module>hdata-excel</module>
-	</modules>
+  <modules>
+    <module>hdata-api</module>
+    <module>hdata-core</module>
+    <module>hdata-console</module>
+    <module>hdata-csv</module>
+    <module>hdata-jdbc</module>
+    <module>hdata-ftp</module>
+    <module>hdata-http</module>
+    <module>hdata-kafka</module>
+    <module>hdata-hdfs</module>
+    <module>hdata-hive</module>
+    <module>hdata-hbase</module>
+    <module>hdata-mongodb</module>
+    <module>hdata-excel</module>
+  </modules>
 </project>