Added the `install` target to the Makefile.

Makefile

-.PHONY: all clean clean-all
+.PHONY: all clean clean-all install
 
-all: fithesis3.cls fithesis.pdf example.pdf clean
+CLASSFILES=fit1[012].clo fithesis.cls fithesis[23].cls
+AUXFILES=example.aux example.log example.out example.toc example.lot example.lof fithesis.aux fithesis.log fithesis.toc fithesis.ind fithesis.idx fithesis.out fithesis.ilg
+PDFFILES=fithesis.pdf example.pdf
+LOGOFILES=loga/eco-logo.pdf loga/fi-logo.pdf loga/fsps-logo.pdf loga/law-logo.pdf loga/med-logo.pdf loga/ped-logo.pdf loga/phil-logo.pdf loga/sci-logo.pdf loga/color/eco-logo.pdf loga/color/fi-logo.pdf loga/color/fsps-logo.pdf loga/color/law-logo.pdf loga/color/med-logo.pdf loga/color/ped-logo.pdf loga/color/phil-logo.pdf loga/color/sci-logo.pdf loga/eco-logo.eps loga/fi-logo.eps loga/fsps-logo.eps loga/law-logo.eps loga/med-logo.eps loga/ped-logo.eps loga/phil-logo.eps loga/sci-logo.eps loga/color/eco-logo.eps loga/color/fi-logo.eps loga/color/fsps-logo.eps loga/color/law-logo.eps loga/color/med-logo.eps loga/color/ped-logo.eps loga/color/phil-logo.eps loga/color/sci-logo.eps
+SOURCEFILE=fithesis.dtx
+INSTALLFILES=$(CLASSFILES) $(LOGOFILES) $(PDFFILES) $(SOURCEFILE)
+
+# This pseudo-target creates the class files, typesets both
+# the example file and the technical documentation and
+# removes any auxiliary files.
+all: fithesis3.cls $(PDFFILES) clean
 	cd loga && make all
 
-fithesis.dtx: fithesis.raw.dtx
+# This target preprocesses the `fithesis.raw.dtx` file into
+# the `fithesis.dtx` source file.
+$(SOURCEFILE): fithesis.raw.dtx
 	./fithesis.raw.sh $< $@
 
+# This target creates the class files.
 fithesis3.cls: fithesis.ins fithesis.dtx
 	yes | tex $<
 
+# This target typesets the technical documentation.
 fithesis.pdf: fithesis.dtx
 	pdflatex $<
 	makeindex fithesis
 	pdflatex $<
 
+# This target typesets the example.
 example.pdf: example.tex fithesis3.cls
 	pdflatex $<
 	pdflatex $<
 
+# This pseudo-target installs any non-auxiliary files
+# into the directory provided as the "to" argument.
+install: all
+	if [ -z "$(to)" ]; then echo "Usage: make to=DIRECTORY install"; exit 1; fi
+	mkdir --parents "$(to)"
+	cp --parents --verbose $(INSTALLFILES) "$(to)"
+
+# This pseudo-target removes any existing auxiliary files.
 clean:
-	rm -f example.aux example.log example.out example.toc example.lot example.lof
-	rm -f fithesis.aux fithesis.log fithesis.toc fithesis.ind fithesis.idx fithesis.out fithesis.ilg
+	rm -f $(AUXFILES)
 
+# This pseudo-target removes any non-makeable files.
 clean-all: clean
-	rm -f example.pdf
-	rm -f fit1[012].clo fithesis.cls fithesis[23] fithesis.dtx fithesis.pdf
+	rm -f $(PDFFILES) $(CLASSFILES) $(SOURCEFILE)