Refactor Beagleblue

[HamiltonChris]

I'd like to refactor some of the modules in this project and because of the mockBluetooth (#5) I've decided that the beagleblue module is a good place to start. Since there might be additional bluetooth connections in the future we need a data structure to hold all the information pertaining to a connection (android, glass, arduinio, etc). This will probably take the form of a struct array. With this we can eliminate a few of the functions that have nearly identical operations (beagleblue_android_send, beagleblue_glass_send, etc). The function beagleblue_set_mode the function socket() can be replaced with hci_open_dev as stated in #9. Also some of the names can be fixed so that they reflect the coding style outlined on the wiki Note: do not make changes until we have a testable system.

• [x] create data structure to hold bluetooth connection info
• [x] refactor functions to use data structure
• [ ] eliminate duplicate functions
• [ ] #8
• [ ] switch socket() in beagleblue_set_mode() to hci_open_dev()
• [x] rename functions (eg. beagleblue_set_mode() isn't public)
• [ ] close sockets in threads instead of closing in a separate function this may mean we keep the beagleblue join function.
• [ ] #22
• [ ] #30

Related issues: #5 #8 #9 #22 #30

[Tyler-R]

creating a data structure to hold the bluetooth connection, refactroring beagleblue to use this new data structure, and making beagleblue_set_mode() public were all fixed in pull request #40