diff --git a/X10D.Unity/.gitignore b/X10D.Unity/.gitignore
new file mode 100644
index 0000000..f1ff06d
--- /dev/null
+++ b/X10D.Unity/.gitignore
@@ -0,0 +1 @@
+lib/
\ No newline at end of file
diff --git a/X10D.Unity/README.md b/X10D.Unity/README.md
index 0f353bf..3fe6c6b 100644
--- a/X10D.Unity/README.md
+++ b/X10D.Unity/README.md
@@ -10,3 +10,8 @@ Below is a list of the number of extension methods written for a given type. Ove
 | :--- | :--- | :--- |
 | `Material` | `X10D.Unity` | 1 |
 | `Vector3` | `X10D.Unity` | 5 |
+
+## Building
+To build this library, you will need to reference lib/UnityEngine.CoreModule.dll
+
+You can find this library under `<UNITY_INSTALL_DIR>/Editor/Data/Managed/UnityEngine`
\ No newline at end of file
diff --git a/X10D.Unity/X10D.Unity.csproj b/X10D.Unity/X10D.Unity.csproj
index f195701..270f610 100644
--- a/X10D.Unity/X10D.Unity.csproj
+++ b/X10D.Unity/X10D.Unity.csproj
@@ -39,11 +39,8 @@
     <Reference Include="System.Data" />
     <Reference Include="System.Net.Http" />
     <Reference Include="System.Xml" />
-    <Reference Include="UnityEngine">
-      <HintPath>F:\Program Files\Unity\2019.1.0f2\Editor\Data\Managed\UnityEngine\UnityEngine.dll</HintPath>
-    </Reference>
     <Reference Include="UnityEngine.CoreModule">
-      <HintPath>F:\Program Files\Unity\2019.1.0f2\Editor\Data\Managed\UnityEngine\UnityEngine.CoreModule.dll</HintPath>
+      <HintPath>lib\UnityEngine.CoreModule.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
@@ -53,7 +50,7 @@
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\X10D\X10D.csproj">
-      <Project>{de210f83-fc9a-4c23-ac2c-7a060960f716}</Project>
+      <Project>{4a8cc062-8b82-4625-b3cc-7dbeab2af149}</Project>
       <Name>X10D</Name>
     </ProjectReference>
   </ItemGroup>