Add better variables and readability

Paper With Citations/Makefile

@@ -1,35 +1,42 @@
 # Written by joe
 
-
+# Variables
 REVISION := "$(shell git describe --abbrev=8 --dirty --always --tags)"
 
+# Paths
+ROOT       := "$(PWD)"
+BUILDDIR   := $(ROOT)/_build
+SUBMITDIR  := $(BUILDDIR)/Brightspace
+
+
 
 all: pdf submit
 
 
-# Move all files to the build dir
+# Move everything required to builddir
 copy:
-	mkdir -p _build
-	find -type f '(' -name "*.tex*" -o -name "*.sty*" -o -name "*.bib" ')' -exec cp {} _build \;
+	mkdir -p $(BUILDDIR)
+	find -type f '(' -name "*.tex*" -o -name "*.sty*" -o -name "*.bib" ')' -exec cp {} $(BUILDDIR) \;
 
+# Build source in buildir into pdf
 pdf: copy
-	cd _build && find . -name '*.tex' -exec latexmk --shell-escape -pdf {} \;
+	cd $(BUILDDIR) && find . -name '*.tex' -exec latexmk --shell-escape -pdf {} \;
 
 submit: pdf
-	rm -rvf brightspace
-	mkdir -p brightspace
-	find -type f '(' -name "*.tex*" -o -name "*.sty*" -o -name "*.bib" ')' -exec cp {} brightspace \;
-	cd brightspace && zip $(REVISION)_source.zip *
-	cp _build/*.pdf brightspace
+	rm -rvf $(SUBMITDIR)
+	mkdir -p $(SUBMITDIR)
+	find -type f '(' -name "*.tex*" -o -name "*.sty*" -o -name "*.bib" ')' -exec cp {} $(SUBMITDIR) \;
+	cd $(SUBMITDIR) && zip $(REVISION)_source.zip *
+	cp $(BUILDDIR)/*.pdf $(SUBMITDIR)
 
-	echo "Auto generated using software written by Joe." > brightspace/README.md
-	echo "This build and all artifacts were built locally on this date: " >> brightspace/README.md
-	date >> brightspace/README.md
+	echo "Auto generated using software written by Joe." > $(SUBMITDIR)/README.md
+	echo "This build and all artifacts were built locally on this date: " >> $(SUBMITDIR)/README.md
+	date >> $(SUBMITDIR)/README.md
 
 	# cleanup
-	cd brightspace && find -type f '(' -name "*.tex*" -o -name "*.sty*" -o -name "*.bib" ')' -exec rm {} \;
+	cd $(SUBMITDIR) && find -type f '(' -name "*.tex*" -o -name "*.sty*" -o -name "*.bib" ')' -exec rm {} \;
 	
 
 clean:
 	git clean -fdX
-	rm -rvf brightspace
+	rm -rvf $(SUBMITDIR)