Revert "Learning git... stopped tracking examples directory."

This reverts commit 234683e49c.

Adding examples back.

examples/aggregate_example.yaml

@@ -0,0 +1,31 @@
+---
+name: Echo some text in the terminal of the device
+group: "Dev"
+variables:
+  - name: package_manager
+    value: "apt"
+  - name: google_dns
+    value: "8.8.8.8"
+  - name: "quad9_dns"
+    value: "9.9.9.9"
+tasks:
+  - name: refresh the cache
+    command: "{{ package_manager }} update"
+
+  - name: display available upgrades
+    command: "{{ package_manager }} list --upgradable"
+
+  - name: apply upgrades
+    command: "{{ package_manager }} upgrade -y"
+
+  - name: cleanup remaining packages
+    command: "{{ package_manager }} autoremove -y"
+
+  - name: run autoclean
+    command: "{{ package_manager }} autoclean -y"
+
+  - name: Ping Google DNS
+    command: "ping {{ google_dns }} -c 4"
+
+  - name: Ping Quad9 DNS
+    command: "ping {{ quad9_dns }} -c 4"

examples/apt_update_example.yaml

@@ -0,0 +1,12 @@
+---
+name: Refresh the apt cache
+device: Cubic
+variables:
+  - name: package_manager
+    value: "apt"
+tasks:
+  - name: refresh the cache
+    command: "{{ package_manager }} update"
+
+  - name: display available upgrades
+    command: "{{ package_manager }} list --upgradable"

examples/apt_upgrade_example.yaml

@@ -0,0 +1,18 @@
+---
+name: Refresh the apt cache
+group: "Dev"
+variables:
+  - name: package_manager
+    value: "apt"
+tasks:
+  - name: refresh the cache
+    command: "{{ package_manager }} update"
+
+  - name: display available upgrades
+    command: "{{ package_manager }} list --upgradable"
+
+  - name: apply upgrades
+    command: "{{ package_manager }} upgrade -y"
+
+  - name: cleanup remaining packages
+    command: "{{ package_manager }} autoremove -y"

examples/echo_example.yaml

@@ -0,0 +1,9 @@
+---
+name: Echo a string to the terminal through the meshbook example.
+group: "Dev"
+variables:
+  - name: file
+    value: "/etc/os-release"
+tasks:
+  - name: Echo!
+    command: "echo $(cat {{ file }})"

examples/variable_usage_example.yaml

@@ -0,0 +1,18 @@
+---
+name: Ping Multiple Points
+group: "Kubernetes"
+variables:
+  - name: host1
+    value: "1.1.1.1"
+  - name: host2
+    value: "9.9.9.9"
+  - name: command1
+    value: "ping"
+  - name: cmd_arguments
+    value: "-c 4"
+tasks:
+  - name: Ping host1
+    command: "{{ command1 }} {{ host1 }} {{ cmd_arguments }}"
+
+  - name: Ping host2
+    command: "{{ command1 }} {{ host2 }} {{ cmd_arguments }}"