Cleanup in preparation for release

* Version bump to 0.20
* Updated 'Changes' to refer to github repository
* Removed unnecessary and unused META.yml
* Removed Makefile, which is generated by 'perl Makefile.PL'
* Filled out README boilerplate a la perldoc ACH::Builder
-	  lib/ACH/Builder.pm blib/lib/ACH/Builder.pm
-	$(NOECHO) $(TOUCH) pm_to_blib
-
-
-# --- MakeMaker selfdocument section:
-
-
-# --- MakeMaker postamble section:
+contractors and vendors. ACH debit transfers include consumer payments on
+insurance premiums, mortgage loans, and other kinds of bills.

 INSTALLATION

 To install this module, run the following commands:

-	perl Makefile.PL
-	make
-	make test
-	make install
+    perl Makefile.PL
+    make
+    make test
+    make install

 SUPPORT AND DOCUMENTATION