Add missing test resources

Change-Id: I18dce6f191dee6c9784e250c1ac116899b5dedcd
diff --git a/src/test/resources/simple_1gram.freq b/src/test/resources/simple_1gram.freq
new file mode 100644
index 0000000..81bc775
--- /dev/null
+++ b/src/test/resources/simple_1gram.freq
@@ -0,0 +1,5 @@
+.	3
+alex	3
+ich	3
+bin	2
+heiße	1