update es to 6.3.0

Author: medcl

README.md

@@ -11,6 +11,7 @@ Versions
 IK version | ES version
 -----------|-----------
 master | 6.x -> master
+6.3.0| 6.3.0
 6.2.4| 6.2.4
 6.1.3| 6.1.3
 5.6.8| 5.6.8
@@ -41,7 +42,7 @@ Install
 * optional 2 - use elasticsearch-plugin to install ( supported from version v5.5.1 ):
 
     ```
-    ./bin/elasticsearch-plugin install https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v6.2.3/elasticsearch-analysis-ik-6.2.3.zip
+    ./bin/elasticsearch-plugin install https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v6.3.0/elasticsearch-analysis-ik-6.3.0.zip
     ```
 
    NOTE: replace `6.2.3` to your own elasticsearch version

pom.xml

@@ -12,7 +12,7 @@
     <inceptionYear>2011</inceptionYear>
 
     <properties>
-        <elasticsearch.version>6.2.4</elasticsearch.version>
+        <elasticsearch.version>6.3.0</elasticsearch.version>
         <maven.compiler.target>1.8</maven.compiler.target>
         <elasticsearch.assembly.descriptor>${project.basedir}/src/main/assemblies/plugin.xml</elasticsearch.assembly.descriptor>
         <elasticsearch.plugin.name>analysis-ik</elasticsearch.plugin.name>