add scratches of examples

examples/here_now.rs

@@ -0,0 +1,42 @@
+use pubnub::{Keyset, PubNubClientBuilder};
+use std::env;
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn snafu::Error>> {
+    let publish_key = env::var("SDK_PUB_KEY")?;
+    let subscribe_key = env::var("SDK_SUB_KEY")?;
+
+    let client = PubNubClientBuilder::with_reqwest_transport()
+        .with_keyset(Keyset {
+            subscribe_key,
+            publish_key: Some(publish_key),
+            secret_key: None,
+        })
+        .with_user_id("user_id")
+        .build()?;
+
+    println!("running!");
+
+    let channels_now = client
+        .here_now()
+        .channels(["my_channel".into(), "other_channel".into()].to_vec())
+        .include_state(true)
+        .include_user_id(true)
+        .execute()
+        .await?;
+
+    println!("All channels data: {:?}", channels_now);
+
+    channels_now.iter().for_each(|channel| {
+        println!("Channel: {}", channel.name);
+        println!("Occupancy: {}", channel.occupancy);
+        println!("Occupants: {:?}", channel.occupants);
+
+        channel
+            .occupants
+            .iter()
+            .for_each(|occupant| println!("Occupant: {:?}", occupant));
+    });
+
+    Ok(())
+}

examples/presence_state.rs

@@ -0,0 +1,43 @@
+use pubnub::{Keyset, PubNubClientBuilder};
+use std::env;
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn snafu::Error>> {
+    let publish_key = env::var("SDK_PUB_KEY")?;
+    let subscribe_key = env::var("SDK_SUB_KEY")?;
+
+    let client = PubNubClientBuilder::with_reqwest_transport()
+        .with_keyset(Keyset {
+            subscribe_key,
+            publish_key: Some(publish_key),
+            secret_key: None,
+        })
+        .with_user_id("user_id")
+        .build()?;
+
+    println!("running!");
+
+    client
+        .set_presence_state()
+        .channels(["my_channel".into(), "other_channel".into()].to_vec())
+        .state("{\"What you're doing\": \"Me? Nothing... Just hanging around\"}")
+        .user_id("user_id")
+        .execute()
+        .await?;
+
+    let states = client
+        .get_presence_state()
+        .channels(["my_channel".into(), "other_channel".into()].to_vec())
+        .user_id("user_id")
+        .execute()
+        .await?;
+
+    println!("All channels state: {:?}", states);
+
+    states.iter().for_each(|channel| {
+        println!("Channel: {}", channel.channel);
+        println!("State: {:?}", channel.state);
+    });
+
+    Ok(())
+}