Mention compiler wrapper in changelog

CHANGELOG.md

@@ -137,7 +137,7 @@
 
 ## Build System
 
-- Drastically improved continuous integration, CI configurations for
+- Improved continuous integration, CI configurations for
   Travis and CircleCI
 - Added codedocs (http://codedocs.xyz) in deploy chain to automate API
   documentation updates
@@ -163,6 +163,10 @@
     - `DASH__ARCH__HAS_RDTSC`: Whether the target architecture provides
       an RDTSC micro-instruction.
 
+- Added compiler wrapper dashc++ (and aliases dashcxx and dashCC) that includes 
+  DASH-specific flags compiler and linker flags. To use the wrapper, simply 
+  replace mpicxx with dashcxx when building your application.
+
 ### Bugfixes:
 
 - Fixed compiler errors for Intel MIC compiler (`icc -mmic`, `mpiicc -mic`).