Add integration instructions

Readme.markdown

@@ -1,3 +1,58 @@
 # Localytics
 
 This is my fork of the [Localytics](http://www.localytics.com) iOS client. Mainly fixing warnings and such.
+
+## Integration
+
+* Download from http://www.localytics.com/docs/iphone-integration/
+* Add files to your project
+* Disable ARC for those files if you're using ARC
+* Add libSqlite3 to your target
+
+``` objective-c
+#define ANALYTICS_ENABLED (!DEBUG && !TARGET_IPHONE_SIMULATOR)
+
+#if ANALYTICS_ENABLED
+  #import "LocalyticsSession.h"
+  #define LLStartSession(key) [[LocalyticsSession sharedLocalyticsSession] startSession:(key)];
+  #define LLLogEvent(name) [[LocalyticsSession sharedLocalyticsSession] tagEvent:(name)];
+  #define LLLogEventWithAttributes(name, parameters) [[LocalyticsSession sharedLocalyticsSession] tagEvent:(name) attributes:(parameters)];
+  #define LLLogScreen(screen) [[LocalyticsSession sharedLocalyticsSession] tagScreen:screen];
+#else
+  #define LLStartSession(...)
+  #define LLLogEvent(...)
+  #define LLLogEventWithAttributes(...)
+  #define LLLogScreen(...)
+#endif
+```
+
+App delegate:
+
+``` objective-c
+- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
+  LLStartSession(@"YOUR_KEY");
+
+  // ...
+
+  return YES;
+}
+
+
+#if ANALYTICS_ENABLED
+- (void)applicationWillEnterForeground:(UIApplication *)application {
+    [[LocalyticsSession sharedLocalyticsSession] resume];
+    [[LocalyticsSession sharedLocalyticsSession] upload];
+}
+
+
+- (void)applicationDidEnterBackground:(UIApplication *)application {
+    [[LocalyticsSession sharedLocalyticsSession] close];
+    [[LocalyticsSession sharedLocalyticsSession] upload];
+}
+
+
+- (void)applicationWillTerminate:(UIApplication *)application {
+    [[LocalyticsSession sharedLocalyticsSession] close];
+}
+#endif
+```