Added setting constant for throwing exceptions (TCPDF) instead of a d…

…ie (#52)

* Added a config setting for throwing an exception instead of a die in the TCPDF bundle

DependencyInjection/Configuration.php

@@ -58,6 +58,7 @@ protected function addTCPDFConfig(ArrayNodeDefinition $rootNode)
                         ->scalarNode('k_thai_topchars')->defaultTrue()->end()
                         ->scalarNode('k_tcpdf_calls_in_html')->defaultFalse()->end()
                         ->scalarNode('k_tcpdf_external_config')->defaultTrue()->end()
+                        ->scalarNode('k_tcpdf_throw_exception_error')->defaultTrue()->end()
 
                         // Optional nice-to-have values
                         ->scalarNode('head_magnification')->defaultValue(1.1)->end()