Minor fixes.

build.gradle

@@ -11,7 +11,7 @@ apply plugin: 'java'
 sourceCompatibility = 1.11
 targetCompatibility = 1.11
 
-mainClassName='jupyter.kernel.OConfKernelMain'
+mainClassName='org.oceandsl.jupyter.kernel.OConfKernelMain'
 
 repositories {
     flatDir{

src/main/java/org/oceandsl/jupyter/kernel/OConfKernel.java

@@ -20,7 +20,7 @@ public class OConfKernel extends BaseKernel {
         this.mgcp = new MagicsProcessor();
         this.magics.registerMagics(new WriteFile());
         // this.engine = new MyScriptEngine();
-        this.languageInfo = new LanguageInfo.Builder("OceanDSL-Config").version("1.1").mimetype("text/oconf")
+        this.languageInfo = new LanguageInfo.Builder("oconf").version("1.1").mimetype("text/oconf")
                 .fileExtension(".oconf").pygments("oconf").codemirror("oconf").build();
     }