Add Readme

Missed null check

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>com.github.judgetread</groupId>
     <artifactId>GriefPreventionQuickShopBridge</artifactId>
-    <version>1.0.0</version>
+    <version>1.0.1</version>
 
     <licenses>
         <license>

src/main/java/com/github/judgetread/GriefPreventionQuickShopBridge/listeners/GriefPreventionListener.java

@@ -56,6 +56,10 @@ public class GriefPreventionListener implements Listener {
      * @param claim A GriefPrevention claim
      */
     private void deleteAllShopsInClaim(final Claim claim) {
+        if(claim == null){
+            return;
+        }
+
         Iterator<Shop> bIt = ((QuickShop) plugin.getQuickShop()).getShopManager().getShopIterator();
 
         if (bIt == null) {