updated README

Author: FlorianMichael

README.md

@@ -94,19 +94,19 @@ In order for ViaLoadingBase to find the compression handler in the pipeline, the
 ## API examples:
 ViaLoadingBase also offers a system to compare the target version with other versions:
 ```java
-if (ViaLoadingBase.getClassWrapper().getTargetVersion().isOlderThan(ProtocolVersion.v1_8)) {
+if (ViaLoadingBase.getInstance().getTargetVersion().isOlderThan(ProtocolVersion.v1_8)) {
     // Code is executed when the target version is < than 1.8
 }
-if (ViaLoadingBase.getClassWrapper().getTargetVersion().isOlderThanOrEqualTo(ProtocolVersion.v1_16_4)) {
+if (ViaLoadingBase.getInstance().getTargetVersion().isOlderThanOrEqualTo(ProtocolVersion.v1_16_4)) {
     // Code is executed when the target version is < = than 1.16.4
 }
-if (ViaLoadingBase.getClassWrapper().getTargetVersion().isNewerThan(ProtocolVersion.v1_12_2)) {
+if (ViaLoadingBase.getInstance().getTargetVersion().isNewerThan(ProtocolVersion.v1_12_2)) {
     // Code is executed when the target version is > than 1.12.2
 }
-if (ViaLoadingBase.getClassWrapper().getTargetVersion().isNewerThanOrEqualTo(ProtocolVersion.v1_14_4)) {
+if (ViaLoadingBase.getInstance().getTargetVersion().isNewerThanOrEqualTo(ProtocolVersion.v1_14_4)) {
     // Code is executed when the target version is > = than 1.14.4
 }
-if (ViaLoadingBase.getClassWrapper().getTargetVersion().isEqualTo(ProtocolVersion.v1_10)) {
+if (ViaLoadingBase.getInstance().getTargetVersion().isEqualTo(ProtocolVersion.v1_10)) {
     // Code is executed when the target version is equal to 1.10
 }
 ```