diff --git a/.classpath b/.classpath
deleted file mode 100644
index 9d1b9a7..0000000
--- a/.classpath
+++ /dev/null
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<classpath>
-	<classpathentry kind="src" path="src"/>
-	<classpathentry exported="true" kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
-	<classpathentry exported="true" kind="lib" path="dep/jython-2.7.jar"/>
-	<classpathentry kind="output" path="bin"/>
-</classpath>
diff --git a/.gitignore b/.gitignore
old mode 100644
new mode 100755
index 743bbf5..dc4d811
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,6 @@
 bin
 /bin/
+.classpath
+.project
+.settings
+
diff --git a/.project b/.project
deleted file mode 100644
index f3f2d8d..0000000
--- a/.project
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-	<name>sjgs</name>
-	<comment></comment>
-	<projects>
-	</projects>
-	<buildSpec>
-		<buildCommand>
-			<name>org.eclipse.jdt.core.javabuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-	</buildSpec>
-	<natures>
-		<nature>org.eclipse.jdt.core.javanature</nature>
-	</natures>
-</projectDescription>
diff --git a/.settings/org.eclipse.jdt.core.prefs b/.settings/org.eclipse.jdt.core.prefs
deleted file mode 100644
index a698e59..0000000
--- a/.settings/org.eclipse.jdt.core.prefs
+++ /dev/null
@@ -1,12 +0,0 @@
-eclipse.preferences.version=1
-org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
-org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
-org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.8
-org.eclipse.jdt.core.compiler.debug.lineNumber=generate
-org.eclipse.jdt.core.compiler.debug.localVariable=generate
-org.eclipse.jdt.core.compiler.debug.sourceFile=generate
-org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
-org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
-org.eclipse.jdt.core.compiler.source=1.8
diff --git a/res/inventory-demo.gif b/res/inventory-demo.gif
old mode 100644
new mode 100755
diff --git a/res/lighting-demo.gif b/res/lighting-demo.gif
old mode 100644
new mode 100755
diff --git a/res/physics-demo.gif b/res/physics-demo.gif
old mode 100644
new mode 100755