Updated test cases documentation

docs/test_cases/t00060.md

@@ -0,0 +1,45 @@
+# t00060 - Parents (base classes) diagram filter test case
+## Config
+```yaml
+compilation_database_dir: ..
+output_directory: puml
+diagrams:
+  t00060_class:
+    type: class
+    glob:
+      - ../../tests/t00060/t00060.cc
+    include:
+      namespaces:
+        - clanguml::t00060
+      parents:
+        - clanguml::t00060::D
+        - clanguml::t00060::H<T,P>
+    using_namespace:
+      - clanguml::t00060
+```
+## Source code
+File t00060.cc
+```cpp
+namespace clanguml {
+namespace t00060 {
+struct A { };
+struct B : public A { };
+struct C : public A { };
+struct D : public B, public C { };
+struct E : public C { };
+struct F : public D { };
+
+template <typename T> struct G {
+    T g;
+};
+
+template <typename T, typename P> struct H : public G<T> {
+    G<T> h;
+    P hh;
+};
+
+}
+}
+```
+## Generated UML diagrams
+![t00060_class](./t00060_class.svg "Parents (base classes) diagram filter test case")