attempt to get rid of NODE_HOME on unix systems

bin/checknode

@@ -1,16 +1,9 @@
-if [ -s "${NODE_HOME}/node" ]; then
-echo "NodeJs found. Good for you! Go tell Yoav you've managed to install it"
+command_exists () {
+    type "$1" &> /dev/null ;
+}
+if command_exists node ; then
+    echo "Node.js was found. Happy Happy Joy Joy."
 else
-echo "***********************************************************************************************"
-echo "*                                                                                             *"
-echo "*                              --- FATAL!!! ---                                               *"
-echo "*                                                                                             *"
-echo "*          NODE_HOME is not defined or does not point to NodeJs base directory                *"
-echo "*          NodeJs must be installed in the build environment (http://nodejs.org/download/)    *"
-echo "*          And NODE_JOME should be set to NodeJs's base folder                                *"
-echo "*          See Yoav Avrahami +972-54-2344146 for more details                                 *"
-echo "*                                                                                             *"
-echo "***********************************************************************************************"
-exit 1
+	echo "Node.js is not installed or is not in your PATH. Please, fix it before continue."
+	exit 1
 fi
-