Spec Editor images in "Reference" were altered.

Signed-off-by: Maha Jastram <maha@jastram.de>
diff --git a/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_1.png b/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_1.png
index 94e1c76..fcf351d 100644
--- a/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_1.png
+++ b/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_1.png
Binary files differ
diff --git a/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_2.png b/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_2.png
index f3468dd..0038e1e 100644
--- a/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_2.png
+++ b/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_2.png
Binary files differ
diff --git a/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_3.png b/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_3.png
index ad9f4ed..10985be 100644
--- a/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_3.png
+++ b/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_3.png
Binary files differ
diff --git a/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_4.png b/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_4.png
index 5d709c2..bc999bf 100644
--- a/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_4.png
+++ b/org.eclipse.rmf.documentation/rmf-images/hierarchy_step_4.png
Binary files differ