Added web access control for resources

.gitignore

-/vendor/
+vendor/*
+!vendor/.htaccess
 composer.lock

libraries/.htaccess

-<Files ~ "^.*.(md|php|pem|p12)">  
-  Order Allow,Deny
-  Deny from all
-</Files>
\ No newline at end of file
+# Apache 2.4
+<IfModule mod_authz_core.c>
+    <Files ~ "^.*.(md|php|pem|p12)">  
+      Require all denied
+    </Files>    
+</IfModule>
+
+# Apache 2.2
+<IfModule !mod_authz_core.c>
+    <Files ~ "^.*.(md|php|pem|p12)">  
+      Order Allow,Deny
+      Deny from all
+    </Files>
+</IfModule>
+

vendor/.htaccess

+# Apache 2.4
+<IfModule mod_authz_core.c>
+    Require all denied
+</IfModule>
+
+# Apache 2.2
+<IfModule !mod_authz_core.c>
+    Order Deny,Allow
+    Deny from all
+</IfModule>