Update CHANGELOG.MD

Author: raghushantha

CHANGELOG.MD

@@ -12,6 +12,8 @@
 - Fix SuppressedOnly switch functionality
 - Updated Positional parameter rule to trigger only when used with > 3 positional parameters
 
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 ## Released v1.1.0 (Sep.1, 2015)
 ###Features:
 - Support for using ScriptAnalyzer as a .net library - ScriptAnalyzer APIs
@@ -33,6 +35,8 @@
 - Exclude external non-powershell applications (Console/GUI) from Positional Parameter rule application
 - Additional heuristics for detecting psavoidusingplaintextforpassword rule violation
 
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 ## Released v1.0.2 (June.24, 2015)
 ###Features:
 - Perf improvements in the Engine to execute rules concurrently.
@@ -59,6 +63,7 @@
 - AvoidUsingPlainTextForPassword rule to be raised only strings or object types.
 - Fix for PositionalParameterUsed method (Helper.cs) uses unsafe method to exclude ForEach-Object and Where-Object.
 
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 ## Released v1.0.1 (May.8, 2015)
 ###Features:
@@ -76,8 +81,7 @@
 - Fix the issue in importing customized rule
 - Fix Function Member Ast cast error
 
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 ##Released v1.0.0 on Apr.24, 2015
 ###Features: