Ignore test files when calculating unit test coverage.

Author: lorentey

.codecov.yml

@@ -0,0 +1,2 @@
+ignore:
+  - "/Tests/*"

BTree.xcodeproj/project.pbxproj

@@ -152,6 +152,7 @@
 		BB17474C1C289539002C929C /* Random.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Random.swift; sourceTree = "<group>"; };
 		BB1747771C2897F8002C929C /* XCTest extensions.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "XCTest extensions.swift"; sourceTree = "<group>"; };
 		BB1F888D1D91BB2000974C2F /* BridgedListTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = BridgedListTests.swift; sourceTree = "<group>"; };
+		BB471D9D1DA58D5B002550B0 /* .codecov.yml */ = {isa = PBXFileReference; lastKnownFileType = text; path = .codecov.yml; sourceTree = "<group>"; };
 		BB54D0AF1C1F0357008A462B /* BTree.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = BTree.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		BB54D0B41C1F0357008A462B /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		BB54D0B91C1F0357008A462B /* BTreeTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = BTreeTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -268,6 +269,7 @@
 				BB0D75D91C1F045C00538080 /* README.md */,
 				BBB224EF1C7BA09B0049FEF6 /* LICENSE.md */,
 				BBBA30481C4946660019830F /* .travis.yml */,
+				BB471D9D1DA58D5B002550B0 /* .codecov.yml */,
 				BB9AE47D1C207303002C5D63 /* Package.swift */,
 				BB0ACC711C7C7E66000C0B98 /* BTree.podspec */,
 				BB8FE9931C7C8BB70051268F /* version.xcconfig */,