cleanup + make ergonomics...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>

Makefile

@@ -248,11 +248,8 @@ LN := cp -l
 # NOTE: grep's -z flag generates a bunch if nulls that we need to clean 
 # 		out via tr.
 DEPENDS.txt: $(MODULE).cls
-	cat $< \
-		| grep -Ezo '\s*\\RequirePackage(\[[^]]*\])?\{[^}]*\}' \
-		| sed -e 's/.*{\(.*\)}/hard \1\n/' \
+	make depends \
 		| grep -a hard \
-		| tr -d '\000' \
 		> $@
 
 
@@ -265,6 +262,15 @@ version:
 	@echo $(VERSION)
 
 
+.PHONY: depends
+depends: $(MODULE).cls
+	@cat $< \
+		| grep -Ezo '\s*\\RequirePackage(\[[^]]*\])?\{[^}]*\}' \
+		| sed -e 's/.*{\(.*\)}/hard \1\n/' \
+		| grep -a hard \
+		| tr -d '\000'
+
+
 
 #----------------------------------------------------------------------
 # Main targets...

README.md

@@ -34,15 +34,14 @@ $ cd ./photobook
 $ make install
 ```
 
-The `photobook` document class requres a set of modules to be installed
-for it to function properly, the full list is included in the docs and
-can be generated (`DEPENDS.txt` file) by calling:
+The `photobook` document class requires a set of modules to be installed
+for it to function, the full list is included in the docs and can be 
+printed by calling:
 ```shell
-$ make DEPENDS.txt
+$ make depends
 ```
 
-
-If only building the docs is required without installing:
+If only building the docs is required without installing, do:
 ```shell
 $ make pdf 
 ```