#309 Upgraded httpclient to 4.3.6

Based on github security alert

Author: rjrudin

build.gradle

@@ -18,7 +18,7 @@ repositories {
 dependencies {
   compile 'com.marklogic:ml-javaclient-util:' + mlJavaclientUtilVersion
   compile 'jaxen:jaxen:1.1.6'
-  compile 'org.apache.httpcomponents:httpclient:4.3.5'
+  compile 'org.apache.httpcomponents:httpclient:4.3.6'
   compile 'org.springframework:spring-web:4.3.5.RELEASE'
 
 	// For EqualsBuilder; added in 3.8.1 to support detecting if a mimetype's properties have changed or not