added local directory

Hello Nicholas, 

first of all, thank you, I like your work. Yesterday I tried to compile the source to get the ```libmyo.jnilib``` on Yosemite, too. But the compiler didn't create the first object file ```com_thalmic_myo_Myo.o``` from the list, because ```g++ -F``` expects a directory, which will be added. I just added the local directory with a simple dot.

Here you can see the manual for the param ```-F``` of ```g++```:
```bash
g++ --help | grep "\-F "

-F <value>              Add directory to framework include search path
```
Default version of ```g++``` (default on Yosemite 10.10):
```bash
g++ -v

Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 6.0 (clang-600.0.54) (based on LLVM 3.5svn)
Target: x86_64-apple-darwin14.0.0
Thread model: posix
```

Happy coding,
Darius