Add readme

README.md

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+# teal
+
+This is a simple library for pxl.blue, an image hosting site. Consider this library extremely unstable
+as pxl.blue and this library are still very early in development.
+
+## Examples
+
+### Uploading a file using your username and password
+```
+import (
+	"fmt"
+  "os"
+	"gitea.com/webb/teal"
+)
+
+func main() {
+	client, _ := teal.Login("username", "password")
+	file, _ := os.Open("glenda.png")
+	image, _ := client.UploadFile(file, "glenda.png")
+	fmt.Println(image)
+}
+```
+
+### Getting an upload key with username and password
+```
+package main
+
+import (
+	"fmt"
+	"gitea.com/webb/teal"
+)
+
+func main() {
+	client, _ := teal.Login("username", "password")
+	fmt.Println(client.UploadKey)
+}
+```
+
+### Manually creating a barebones client and uploading a file
+
+```
+import (
+"fmt"
+"gitea.com/webb/teal"
+)
+
+func main() {
+  client := teal.Client{
+  UserAgent: "teal"
+  UploadKey: "key"
+  }
+  file, _ := os.Open("glenda.png")
+  url, _ := client.UploadFile(file, "glenda.png")
+  fmt.Println(url)
+```