Re-jigged the class implementation to get better support from roxygen2 and CRAN check(). Majority of public functions are documented (remaining are the CRUD functions)

man/DBClient-cash-dbAction.Rd

@@ -0,0 +1,14 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/DBClient-dbAction.R
+\name{DBClient$dbAction}
+\alias{DBClient$dbAction}
+\title{DBClient$dbAction}
+\arguments{
+\item{statement}{\if{html}{\out{<character>}} Statement to run}
+}
+\value{
+\if{html}{\out{<logical>}} TRUE if the execution was successful, FALSE if not
+}
+\description{
+Executes a query/statement on a database which has no result
+}