Added UNITY_EDITOR checks

.gitignore

@@ -2,7 +2,7 @@
 .DS_Store
 .AppleDouble
 .LSOverride
-
+.idea
 # Icon must end with two \r
 Icon
 

Runtime/Scripts/SBCustomTypeAttribute.cs

@@ -1,4 +1,5 @@
-using UnityEngine;
+#if UNITY_EDITOR
+using UnityEngine;
 using System;
 using System.Collections;
 
@@ -20,6 +21,4 @@ public SBCustomTypeAttribute(string conditionalSourceField, bool inverse)
     }
 
 }
-
-
-
+#endif

Runtime/Scripts/SBCustomTypePropertyDrawer.cs

@@ -1,4 +1,6 @@
-using UnityEngine;
+#if UNITY_EDITOR
+
+using UnityEngine;
 using UnityEditor;
 using System.Collections.Generic;
 
@@ -86,3 +88,4 @@ private bool GetConditionalHideAttributeResult(SBCustomTypeAttribute condHAtt, S
         return enabled;
     }
 }
+#endif

Runtime/Scripts/SpacebrewClient.cs

@@ -26,7 +26,9 @@ public class Publisher
     {
         public string name;
         public type pubType;
+#if UNITY_EDITOR
         [SBCustomType("pubType", false)]
+#endif
         public string customType;
         //public string defaultValue;
 
@@ -50,7 +52,9 @@ public class Subscriber
     {
         public string name;
         public type subType;
+#if UNITY_EDITOR
         [SBCustomType("subType", false)]
+#endif
         public string customType;
         public SpacebrewMessageEvent onReceived;