Added support for coveralls.io

[jhellar]

Motivation

https://issues.jboss.org/browse/FH-2619
Add code coverage status with coveralls.io.

Change

Modified travis config to generate also code coverage and send that to coveralls.io.
Added badge to README.

[coveralls]

Changes Unknown when pulling 55d391a on jhellar:FH-2619 into * on feedhenry:master*.

[corinnekrych]

@jhellar With Xcode 8 and Swift3 update coming very soon, xctool is not supported anymore (see: facebookarchive/xctool#704) could you use xcodebuild instead pls

[corinnekrych]

@jhellar Looking at the detailled coverage report https://coveralls.io/builds/8406958
I don't see any of the Swift files. Only the Objective-C has been instrumented.
for the fh-ios-swift-sdk only the sync code has been left in Objective-C, all the other part, ie: cloud call, oauth, push are in swift.

[coveralls]

Changes Unknown when pulling 85ce386 on jhellar:FH-2619 into * on feedhenry:master*.

[jhellar]

@corinnekrych should be fixed. I managed to get this work with slather.

[corinnekrych]

@jhellar why do we have files like:
/../../../../../Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/include/sys/_types.h
included in the coverage report?

[jhellar]

@corinnekrych I did not notice and I'm not sure, thought that these should be ignored because of "source_directory: FeedHenry" line in .slather.yml. I will look at this.

[coveralls]

Changes Unknown when pulling 0a407ae on jhellar:FH-2619 into * on feedhenry:master*.

[jhellar]

@corinnekrych should be fixed now.

[corinnekrych]

+1
thanks!!! @jhellar
🌹 🌹