Added VIM tools, and help pages to all scripts missing one

reporting/doi2bib

@@ -1,8 +1,11 @@
 #!/bin/bash
 
-if [ -z "$1" ]
-then echo Expecting doi code
-     exit
-fi
+function helpexit() {
+    echo Print out bibtex entry from a DOI.
+    echo Give DOI code as the argument
+    exit
+}
+[[ -z "$1" ]] && helpexit
+[[ "$1" = "-h" ]] && helpexit
 
 curl -LH "Accept: text/bibliography; style=bibtex" "http://dx.doi.org/$1"