Added test for generating profiling.json
Fixed inclusion for NLohmannJson json.hpp in Test
Tested resulting profiling.json on R (jsonlite), Python (json)
and C++ (json for modern C++)

Missing file_index characteristic in BP1Writer metadata

Fixes #153

Increased Default Maximum Memory to 200Mb
Added config.xml for the heat transfer example for memory management
(among other parameters) at runtime 

To do:
Copy config.xml to /build/bin, right now the heat transfer example won't
run in config.xml is not found

Checking std::ios_base::failure exceptions
IOChrono is off by default, each owner turns it on explicitly
Modified FileDescriptor and FilePointer destructors
Added Tests BPWriteRead for stdio and fstream
Removed IO AddTransport with vector (shoud have been there?) to enable
AddTransport in Tests

Fixes #152

Keep only std::map<std::string, std::string> initializer list.
Corrected examples. 

Replace std::copy with std::memcpy in std::thread
Added threads to profiling.log
Limiting the use of threads

TO DO: large scale runs to enforce threads policy

If file doesn't exist, continue with run
Fixed bug if space before and after "=" in: <tag attribute1= "value1">

To do: need to discuss policy for config files, still experimental

Verified MPI and sequencial version

Initial implementation of XML running with helloBPWriter example
Corrected bug in ADIOS.cpp when detecting IO in ConfigFile

unsigned int checking if < 0
Adding intermediate int verbosity for string conversion stoi

m_Name must a string object not a const reference. 

Added example bpFlushWriter (incomplete).

To do:
Memory buffer reallocation strategy

* Add initial python support to CMake build

* pybind11 2017-04-07 (1df91d36)

Code extracted from:

    https://github.com/pybind/pybind11.git

at commit 1df91d36cfa997c8987889234304ea5e37cc3e68 (v2.1.1).

* Build python bindings with cmake

* Adjust for adios2py -> adios2 module name

Python bindings running but not printing values with bpls. Min and Max
captured correctly.

IO SetParameters and AddTransport will accept vector and map

Variable.cpp and Variable.tcc for complete separation of core components
in the public include