Use snapshot and milestone repositories instead of libs-snapshot and libs-milestone.

Closes #396

README.adoc

@@ -85,9 +85,9 @@ If you'd rather like the latest snapshots of the upcoming major version, use our
 </dependency>
 
 <repository>
-  <id>spring-libs-snapshot</id>
+  <id>spring-snapshot</id>
   <name>Spring Snapshot Repository</name>
-  <url>https://repo.spring.io/libs-snapshot</url>
+  <url>https://repo.spring.io/snapshot</url>
 </repository>
 ----
 

pom.xml

@@ -128,20 +128,6 @@
 
 	</dependencies>
 
-	<repositories>
-		<repository>
-			<id>spring-libs-snapshot</id>
-			<url>https://repo.spring.io/libs-snapshot</url>
-		</repository>
-	</repositories>
-
-	<pluginRepositories>
-		<pluginRepository>
-			<id>spring-plugins-release</id>
-			<url>https://repo.spring.io/plugins-release</url>
-		</pluginRepository>
-	</pluginRepositories>
-
 	<build>
 		<plugins>
 			<plugin>
@@ -179,4 +165,21 @@
 		</profile>
 	</profiles>
 
+	<repositories>
+		<repository>
+			<id>spring-snapshot</id>
+			<url>https://repo.spring.io/snapshot</url>
+			<snapshots>
+				<enabled>true</enabled>
+			</snapshots>
+			<releases>
+				<enabled>false</enabled>
+			</releases>
+		</repository>
+		<repository>
+			<id>spring-milestone</id>
+			<url>https://repo.spring.io/milestone</url>
+		</repository>
+	</repositories>
+
 </project>

src/main/asciidoc/preface.adoc

@@ -64,6 +64,6 @@ For information on the Spring Data LDAP source code repository, nightly builds,
 
 * Version Control: https://github.com/spring-projects/spring-data-ldap
 * Bugtracker: https://github.com/spring-projects/spring-data-ldap/issues
-* Release repository: https://repo.spring.io/libs-release
-* Milestone repository: https://repo.spring.io/libs-milestone
-* Snapshot repository: https://repo.spring.io/libs-snapshot
+* Release repository: https://repo1.maven.org/maven2/
+* Milestone repository: https://repo.spring.io/milestone/
+* Snapshot repository: https://repo.spring.io/snapshot/