update documentation

README.md

-# SimpleModifyHeaders
+# SimpleModifyHeaders V 1.3
 
 Extension for firefox . 
 
@@ -9,15 +9,16 @@ The rules table contains lines with the following parameters :
 - header field name
 - header field value 
 - comment : a comment 
+- apply on : "request" if the modification apply on the request headers or "response" if the modification apply on the response headers
 - status : on if the modification is active , off otherwise 
 
-We can choose the urls on which the modifications applies by modifying the url pattern. The url pattern must follow the syntaxe define by https://developer.chrome.com/extensions/match_patterns
+We can choose the urls on which the modifications applies by modifying the url pattern. The url pattern must follow the syntaxe define by https://developer.chrome.com/extensions/match_patterns . Putting an empty string on the field will select all urls.
 
 To save and apply the modification , you need to click on the save button
 
 It's possible to: 
 -  export the configuration in a file (json format)
--  import the configuration from a file , it support the format of  the Modifyheaders plugin  
+-  import the configuration from a file , it support the format of  the Modifyheaders plugin 
 
 
 The extension can be start and stop via the button on the top right.

manifest.json

@@ -3,7 +3,7 @@
   "description": "Simple Modify headers ",
   "manifest_version": 2,
   "name": "simple-modify-headers",
-  "version": "1.2",
+  "version": "1.3",
   "homepage_url": "https://github.com/didierfred/SimpleModifyHeaders",
   "icons": {
     "48": "icons/modify-48.png"

popup/config.html

@@ -29,7 +29,14 @@
 
 .select_field{
 	font-size: 14px;
-	height: 20px;
+	height: 25px;
+	padding: 0px 0px 0px;
+	border-style: solid;
+	border-radius: 5px;	
+	border-width: 1px; 
+	border-color: #AAAAAA;
+	background-color: white;
+
 }
 
 .colonne{