Initial groff docs directories created, and initial example made for single_node.h (as single_node.h.ms), still needs fixing and finishing.

docs/nodes/single_node.h.ms

@@ -0,0 +1,20 @@
+.DA
+
+.TL
+single_node.h
+
+.AU
+Wael Karram
+
+.AB no
+Documentation for single_node.h
+
+.PP
+This header defines a single node, with the prepoccessor variable SINGLE_NODE_H used as an include guard.
+.br
+Defines a single struct
+.UL node_t which has the fields
+.I "next"
+ and 
+.I "data"
+, the former of which is another node pointer, and the latter is a void pointer.

docs/nodes/single_node.h.ms~

@@ -0,0 +1,13 @@
+.DA
+
+.TL
+single_node.h
+
+.AU
+Wael Karram
+
+.AB no
+Documentation for single_node.h
+
+.PP
+This header defines a single node, with the prepoccessor variable SINGLE_NODE_H used as an include guard.