Added APACHE 2.0 License text.

NOTICE

@@ -1,5 +1,5 @@
 ATTENTION ALL USERS OF THIS REPOSITORY:
- 
+
 The original work found in this repository is provided by Silicon Labs under the
 Apache License, Version 2.0.
 
@@ -8,7 +8,7 @@ modifications are clearly identified as being licensed under:
 
   (1) the Apache License, Version 2.0 or a compatible open source license; or
   (2) under a proprietary license with a copy of such license deposited.
-  
+
 All posted derivative works must clearly identify which license choice has been
 elected.
 
@@ -17,13 +17,12 @@ the Apache License, Version 2.0.
 
 SILICON LABS MAKES NO WARRANTY WITH RESPECT TO ALL POSTED THIRD PARTY CONTENT
 AND DISCLAIMS ALL OTHER WARRANTIES OR LIABILITIES, INCLUDING ALL WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, OWNERSHIP, 
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, OWNERSHIP,
 NON-INFRINGEMENT, AND NON-MISAPPROPRIATION.
- 
+
 In the event a derivative work is desired to be submitted to Silicon Labs as a
-“Contribution” under the Apache License, Version 2.0, a “Contributor” must give 
+“Contribution” under the Apache License, Version 2.0, a “Contributor” must give
 written email notice to micrium@weston-embedded.com. Unless an email response in
-the affirmative to accept the derivative work as a “Contribution”, such email 
+the affirmative to accept the derivative work as a “Contribution”, such email
 submission should be considered to have not been incorporated into the original
 work.
-