Add PromiseKit dependency

- Added PromiseKit dependency

Carthage/Checkouts/PromiseKit/.github/LinuxMain.stencil

@@ -0,0 +1,19 @@
+@testable import Core
+@testable import A_
+import XCTest
+
+//TODO get this to run on CI and don’t have it committed
+//NOTE problem is Sourcery doesn’t support Linux currently
+//USAGE: cd PromiseKit/Sources/.. && sourcery --config .github/sourcery.yml
+
+{% for type in types.classes|based:"XCTestCase" %}
+extension {{ type.name }} {
+    static var allTests = [
+    {% for method in type.methods %}{% if method.parameters.count == 0 and method.shortName|hasPrefix:"test" %}    ("{{ method.shortName }}", {{type.name}}.{{ method.shortName }}),
+    {% endif %}{% endfor %}]
+}
+
+{% endfor %}
+XCTMain([
+{% for type in types.classes|based:"XCTestCase" %}{% if not type.annotations.excludeFromLinuxMain %}    testCase({{ type.name }}.allTests),
+{% endif %}{% endfor %}])