Added notes on future class naming convention

notes/classes.md

+Classes!
+========
+
+
+Variant A
+---------
+
+    SugarTrail::CondBlock
+    SugarTrail::Master
+    SugarTrail::Repo
+    SugarTrail::Repo::FileSystem
+    SugarTrail::Slave
+
+Variant B
+---------
+
+    SugarTrail::CondBlock
+    SugarTrail::Repo
+    SugarTrail::Repo::FileSystem
+    SugarTrail::Template::Master
+    SugarTrail::Template::Slave
+