Add licensing info and crypto notice to README.

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@629449 13f79535-47bb-0310-9956-ffa450edef68

README.txt

@@ -29,6 +29,45 @@ and depends on the following external libraries:
   (The runtime dependency on Log4j will be removed with the next
   release of Apache mime4j.)
 
+Licensing
+---------
+
+Apache HttpComponents Client is licensed under the Apache License 2.0.
+See the files called LICENSE.txt and NOTICE.txt for more information.
+
+Cryptographic Software Notice
+-----------------------------
+
+This distribution may include software that has been designed for use
+with cryptographic software. The country in which you currently reside
+may have restrictions on the import, possession, use, and/or re-export
+to another country, of encryption software. BEFORE using any encryption
+software, please check your country's laws, regulations and policies
+concerning the import, possession, or use, and re-export of encryption
+software, to see if this is permitted. See <http://www.wassenaar.org/>
+for more information.
+
+The U.S. Government Department of Commerce, Bureau of Industry and
+Security (BIS), has classified this software as Export Commodity
+Control Number (ECCN) 5D002.C.1, which includes information security
+software using or performing cryptographic functions with asymmetric
+algorithms. The form and manner of this Apache Software Foundation
+distribution makes it eligible for export under the License Exception
+ENC Technology Software Unrestricted (TSU) exception (see the BIS
+Export Administration Regulations, Section 740.13) for both object
+code and source code.
+
+The following provides more details on the included software that
+may be subject to export controls on cryptographic software:
+
+  Apache HttpComponents Client interfaces with the
+  Java Secure Socket Extension (JSSE) API to provide
+
+    - HTTPS support
+
+  Apache HttpComponents Client does not include any
+  implementation of JSSE.
+
 Contact
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