Fix pycaffe import: Add missing __init__.py (#133)

* Add missing __init__.py to fix pycaffe import.

* Update __init__.py to last Caffe version

3rdparty/caffe/python/caffe/__init__.py

+from .pycaffe import Net, SGDSolver, NesterovSolver, AdaGradSolver, RMSPropSolver, AdaDeltaSolver, AdamSolver, NCCL, Timer
+from ._caffe import init_log, log, set_mode_cpu, set_mode_gpu, set_device, Layer, get_solver, layer_type_list, set_random_seed, solver_count, set_solver_count, solver_rank, set_solver_rank, set_multiprocess, has_nccl
+from ._caffe import __version__
+from .proto.caffe_pb2 import TRAIN, TEST
+from .classifier import Classifier
+from .detector import Detector
+from . import io
+from .net_spec import layers, params, NetSpec, to_proto