\ProvidesPackage{DemoMode}[2015/08/19 v0.8 Demo mode]

% define a condition
\newif\ifdemo

\demofalse
% define demo as false

% \myconditionfalse
% define mycondition as false
\newcommand\conditionalinput[2]{
	\ifdemo
		\input{#1}
	\else
		\input{#2}
	\fi
}