feat: add support for carthage (#21)

Author: BrandonStalnaker

Cartfile

@@ -0,0 +1,2 @@
+binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseAnalyticsBinary.json" ~> 9.0
+github "mparticle/mparticle-apple-sdk" ~> 8.0

Podfile

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0940"
+   LastUpgradeVersion = "1340"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -27,6 +27,15 @@
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "D316BD31217F670500688E56"
+            BuildableName = "mParticle_Google_Analytics_Firebase.framework"
+            BlueprintName = "mParticle-Google-Analytics-Firebase"
+            ReferencedContainer = "container:mParticle-Google-Analytics-Firebase.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <Testables>
          <TestableReference
             skipped = "NO">
@@ -39,17 +48,6 @@
             </BuildableReference>
          </TestableReference>
       </Testables>
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "D316BD31217F670500688E56"
-            BuildableName = "mParticle_Google_Analytics_Firebase.framework"
-            BlueprintName = "mParticle-Google-Analytics-Firebase"
-            ReferencedContainer = "container:mParticle-Google-Analytics-Firebase.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -70,8 +68,6 @@
             ReferencedContainer = "container:mParticle-Google-Analytics-Firebase.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"

mParticle-Google-Analytics-Firebase.xcodeproj/project.pbxproj

@@ -4,6 +4,17 @@
 #else
 #import "mParticle.h"
 #endif
+#if SWIFT_PACKAGE
+    @import Firebase;
+#else
+    #if __has_include(<FirebaseCore/FirebaseCore.h>)
+        #import <FirebaseCore/FirebaseCore.h>
+        #import <FirebaseAnalytics/FIRAnalytics.h>
+    #else
+        #import "FirebaseCore/FirebaseCore.h"
+        #import "FirebaseAnalytics/FIRAnalytics.h"
+    #endif
+#endif
 
 @interface MPKitFirebaseAnalytics : NSObject <MPKitProtocol>
 

mParticle-Google-Analytics-Firebase.xcodeproj/xcshareddata/xcschemes/mParticle-Google-Analytics-Firebase.xcscheme

@@ -1,5 +1,4 @@
 #import "MPKitFirebaseAnalytics.h"
-#import <Firebase/Firebase.h>
 
 @interface MPKitFirebaseAnalytics()
 

mParticle-Google-Analytics-Firebase/MPKitFirebaseAnalytics.h

@@ -0,0 +1,2 @@
+//necessary according to Firebase https://github.com/firebase/firebase-ios-sdk/blob/master/Carthage.md
+import Foundation