Add news for the release

NEWS.txt

+Copyright (c) 2013-2014 Intel, Inc.  All rights reserved.
+ Copyright ScalFmm 2011 INRIA,
+ 
+ 
+===========================================================================
+
+This file contains the main features as well as overviews of specific
+bug fixes (and other actions) for each version of ScalFMM since
+version 1.1.
+
+
+
+1.2
+---
+
+- New FMA format to read/write particles
+- Add examples repository
+- Add distributions generator 
+- Fix bugs in periodic model 
+- Fix bug and performance improvements in MPI thread algorithms
+- Now we use MPI THREAD SERIALIZED rather than MPI_THREAD_MULTIPLE in MPI+OpenMP algorithm. 
+- Add Uniform interpolation based on Lagrange polynomials
+- Improve tests -> now we use Ctest and CDash (Thanks F Rue to Inria)
+ 
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