Detect whether running on emulator

[fractalwrench]

Guesses whether the app is running on an emulator and adds this to the Device tab.

[coveralls]

Pull Request Test Coverage Report for Build 1089

• 5 of 5 (100.0%) changed or added relevant lines in 1 file are covered.
• 5 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.06%) to 70.666%

---

Files with Coverage Reduction	New Missed Lines	%
sdk/src/main/java/com/bugsnag/android/DeviceData.java	2	76.69%
sdk/src/main/java/com/bugsnag/android/Client.java	3	52.58%

Totals
Change from base Build 1087:	0.06%
Covered Lines:	1761
Relevant Lines:	2492

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 1089

• 5 of 5 (100.0%) changed or added relevant lines in 1 file are covered.
• 5 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.06%) to 70.666%

---

Files with Coverage Reduction	New Missed Lines	%
sdk/src/main/java/com/bugsnag/android/DeviceData.java	2	76.69%
sdk/src/main/java/com/bugsnag/android/Client.java	3	52.58%

Totals
Change from base Build 1087:	0.06%
Covered Lines:	1761
Relevant Lines:	2492

---

💛 - Coveralls