Updated namespace + some spelling

CMakeLists.txt

TextToSpeech.cpp

TextToSpeech.h

test/DataQueueTests.cpp

test/FileTTSCacheTests.cpp

test/JingleMgrTests.cpp

test/PollyTTSDriverTests.cpp

test/PulseAudioSinkTests.cpp

test/TTSRunnerTests.cpp

tts_library/CMakeLists.txt

tts_library/DataQueue.hpp

tts_library/FileTTSCache.cpp

tts_library/FileTTSCache.hpp

tts_library/JingleMgr.cpp

tts_library/JingleMgr.hpp

tts_library/Log.h

tts_library/PollyTTSDriver.cpp

tts_library/PollyTTSDriver.hpp

tts_library/PulseAudioSink.cpp

tts_library/PulseAudioSink.hpp