add very basic CMakeLists.txt
add very basic CMakeLists.txt

PhillipMwaniki/ViewerJS,kogmbh/ViewerJS,h44z/ViewerJS,h44z/ViewerJS,luiseduardohdbackup/ViewerJS,luiseduardohdbackup/ViewerJS,PhillipMwaniki/ViewerJS,gdseller/ViewerJS,haojiejie/ViewerJS,utkarshx/ViewerJS,chrilith/ViewerJS,utkarshx/ViewerJS,CypressBusinessSolutions/ViewerJS,CypressBusinessSolutions/ViewerJS,chrilith/ViewerJS,kogmbh/ViewerJS,haojiejie/ViewerJS,gdseller/ViewerJS