Document supported sieve actions

Author: josaphatim

README.md

@@ -9,6 +9,7 @@ A native PHP library for managing the ManageSieve protocol (RFC5228) and generat
 # How to use
 
 ### Connect to ManageSieve
+
 ```php
 require_once "vendor/autoload.php";
 
@@ -19,8 +20,8 @@ $client->connect("test@localhost", "mypass", false, "", "PLAIN");
 $client->listScripts();
 ```
 
-
 ### Generate Sieve script
+
 ```php
 $filter = \PhpSieveManager\Filters\FilterFactory::create('MaxFileSize');
 
@@ -42,3 +43,145 @@ $size_condition->addAction(
 $filter->setCondition($size_condition);
 $filter->toScript();
 ```
+
+## Actions
+
+[\[RFC5293\]](https://www.rfc-editor.org/rfc/rfc5293.html)
+
+```
+addheader [":last"]
+    <field-name: string>
+    <value: string>
+```
+
+[\[RFC5293\]](https://www.rfc-editor.org/rfc/rfc5293.html)
+
+```
+deleteheader [":index" <fieldno: number> [":last"]]
+    [COMPARATOR] [MATCH-TYPE]
+    <field-name: string>
+    [<value-patterns: string-list>]
+```
+
+[\[RFC8580\]](https://www.rfc-editor.org/rfc/rfc8580.html) [\[RFC5435\]](https://www.rfc-editor.org/rfc/rfc5434.html)
+
+```
+notify [":from" string]
+    [":importance" <"1" / "2" / "3">]
+    [":options" string-list]
+    [":message" string]
+    [:fcc "INBOX.Sent"]
+    <method: string>
+```
+
+[\[RFC5230\]](https://www.rfc-editor.org/rfc/rfc5230.html) [\[RFC6131\]](https://www.rfc-editor.org/rfc/rfc6131.html) [\[RFC8580\]](https://www.rfc-editor.org/rfc/rfc8580.html)
+
+```
+vacation [[":days" number] | [":seconds"]]
+    [":subject" string]
+    [":from" string]
+    [":addresses" string-list]
+    [":mime"]
+    [":handle" string]
+    <reason: string>
+```
+
+[\[RFC5232\]](https://www.rfc-editor.org/rfc/rfc5232.html)
+
+```
+setflag [<variablename: string>]
+    <list-of-flags: string-list>
+```
+
+[\[RFC5232\]](https://www.rfc-editor.org/rfc/rfc5232.html)
+
+```
+addflag [<variablename: string>]
+    <list-of-flags: string-list>
+```
+
+[\[RFC5232\]](https://www.rfc-editor.org/rfc/rfc5232.html)
+
+```
+removeflag [<variablename: string>]
+    <list-of-flags: string-list>
+```
+
+[\[RFC5703\]](https://www.rfc-editor.org/rfc/rfc5703.html)
+
+```
+replace [":mime"]
+    [":subject" string]
+    [":from" string]
+    <replacement: string>
+```
+
+[\[RFC5703\]](https://www.rfc-editor.org/rfc/rfc5703.html)
+
+```
+enclose <:subject string>
+    <:headers string-list>
+    string
+```
+
+[\[RFC5229\]](https://www.rfc-editor.org/rfc/rfc5229.html)
+
+```
+extracttext [MODIFIER]
+    [":first" number]
+    <varname: string>
+```
+
+[\[RFC6558\]](https://www.rfc-editor.org/rfc/rfc6558.html)
+
+```
+convert  <quoted-from-media-type: string>
+    <quoted-to-media-type: string>
+    <transcoding-params: string-list>
+```
+
+[\[RFC5229\]](https://www.rfc-editor.org/rfc/rfc5232.html)
+
+```
+set [MODIFIER] <name: string>
+    <value: string>
+
+Modifiers:  ":lower" / ":upper" / ":lowerfirst" / ":upperfirst" /
+           ":quotewildcard" / ":length"
+```
+
+[\[RFC5232\]](https://www.rfc-editor.org/rfc/rfc5232.html) [\[RFC3894\]](https://www.rfc-editor.org/rfc/rfc3894.html) [\[RFC5228\]](https://www.rfc-editor.org/rfc/rfc5228.html) [\[RFC5490\]](https://www.rfc-editor.org/rfc/rfc5490.html) [\[RFC9042\]](https://www.rfc-editor.org/rfc/rfc9042.html) [\[RFC8579\]](https://www.rfc-editor.org/rfc/rfc8579.html)
+
+```
+fileinto [:mailboxid <mailboxid: string>] [:specialuse <special-use-attr: string>] [:create] [":copy"] [":flags" <list-of-flags: string-list>] <mailbox: string>
+```
+
+[\[RFC5228\]](https://www.rfc-editor.org/rfc/rfc5232.html) [\[RFC3894\]](https://www.rfc-editor.org/rfc/rfc3894.html) [\[RFC6009\]](https://www.rfc-editor.org/rfc/rfc6009.html)
+
+```
+redirect [":copy"] [:notify "value"] [:ret "FULL"|"HDRS"] [":copy"] <address: string>
+```
+
+[\[RFC5228\]](https://www.rfc-editor.org/rfc/rfc5232.html) [\[RFC5232\]](https://www.rfc-editor.org/rfc/rfc5232.html)
+
+```
+keep [":flags" <list-of-flags: string-list>]
+```
+
+[\[RFC5228\]](https://www.rfc-editor.org/rfc/rfc5232.html)
+
+```
+discard
+```
+
+[\[RFC5429\]](https://www.rfc-editor.org/rfc/rfc5429.html)
+
+```
+reject
+```
+
+[\[RFC5429\]](https://www.rfc-editor.org/rfc/rfc5429.html)
+
+```
+ereject
+```