diff --git a/docs/img/t1.jpg b/docs/img/t1.jpg
new file mode 100644
index 0000000..bd5db82
Binary files /dev/null and b/docs/img/t1.jpg differ
diff --git a/docs/img/t2.jpg b/docs/img/t2.jpg
new file mode 100644
index 0000000..e197aa3
Binary files /dev/null and b/docs/img/t2.jpg differ
diff --git a/docs/img/t3.jpg b/docs/img/t3.jpg
new file mode 100644
index 0000000..aa52cc8
Binary files /dev/null and b/docs/img/t3.jpg differ
diff --git a/docs/img/t4.jpg b/docs/img/t4.jpg
new file mode 100644
index 0000000..26fcaf3
Binary files /dev/null and b/docs/img/t4.jpg differ