Add README

Author: akrabat

README.md

@@ -0,0 +1,142 @@
+# Rodeo: Flickr Uploader
+
+Rodeo uploads images to [Flickr][1], applying keyword based rules to add the image to albums and also to delete keywords that you may not want to be published.
+
+It can also resize images for sharing on social media or in messages.
+
+[1]: https://flickr.com
+
+## Usage
+
+### rodeo upload
+
+Upload files to Flickr, applying rules to either delete keywords or add to an album.
+
+```
+rodeo upload <files...>
+```
+![](doc/rodeo-upload.png)
+
+### rodeo resize
+
+Resize image within a bounding box at a given quality which can be useful for social media or messaging.
+
+```
+rodeo resize <files...>
+```
+
+![](doc/rodeo-resize.png)
+
+### rodeo info
+
+Displays useful metadata information about the files.
+
+```
+$ rodeo info <files...>
+```
+
+![](doc/rodeo-info.png)
+
+
+### Other commands
+
+| Command | Purpose |
+| --- | --- |
+| `rodeo viewconfig` | Display Rodeo's configuration. |
+| `rodeo authenticate` | Authenticate with Flickr. |
+| `rodeo listalbums` | List albums (helpful to find album IDs. |
+
+
+## Installation
+
+1. Clone this repository
+2. Build rodeo: `go build`
+3. Copy to a directory on your path: `mv rodeo /usr/local/bin` 
+4. Run `rodeo --help` to check that it works
+
+### Install dependencies
+
+Rodeo requires a Flickr API key. To get this:
+
+1. Go to [https://www.flickr.com/services/apps/create/apply][https://www.flickr.com/services/apps/create/apply]
+2. Click "Apply for a Non-Commercial Key"
+3. Enter these details:
+    * Name: *Rodeo for {your name here}*
+    * What are you building: *Command line Flickr uploader*
+    * Check both check boxes if you acknowledge and agree to them
+4. Press Submit
+5. The *Key* and *Secret* are now displayed. Write these down.
+6. Run `rodeo authenticate` to add your *Key* and *Secret* and to then authenticate with Flickr so that Rodeo has 
+   access to your photos.
+
+### Command line tools
+
+Install [`exiftool`][2] and [`convert`][3] as Rodeo requires them. 
+
+On macOS, these can be installed using [`brew`][4]. On Linux, use your distro's package manager.
+
+[2]: https://exiftool.org
+[3]: https://imagemagick.org/script/convert.php
+[4]: https://brew.sh
+
+
+
+ ## Config
+ 
+ Rodeo's configuration is stored in `~/.config/rodeo.yaml`
+ 
+ Example:
+ 
+ ```yaml
+ # location of command line tools
+cmd: 
+   convert: /usr/local/bin/convert
+   exiftool: /usr/local/bin/exiftool
+
+# Flickr configuration - use `rodeo authenticate` to set
+flickr:
+   api_key: "{api key}"
+   api_secret: "{api secret}"
+   full_name: "{full name}"
+   oauth_token: "{auth token}"
+   oauth_token_secret: "{auth token secret}"
+   user_nsid: "{user's id}"
+   username: "{user's name}"
+
+# Configuration for `rodeo resize`
+resize:
+   method: "catrom"
+   quality: "75"
+   scale: "2000x2000"
+
+# rules for `rodeo upload`
+keywords:
+   {keyword}: 
+     delete: true
+     album_id: "{album id}"
+```
+
+### Resize configuration
+
+If these do not exist in `rodeo.yaml`, then they are added automatically on first
+run of `rodeo resize`
+
+| Property  | What it does                                                            |
+| --------- | ----------------------------------------------------------------------- |
+| `method`  | [Interpolation method][im]. Default is `catrom`                         |
+| `quality` | [JPEG/PNG compression level][cl] of resized image in %. Default is `75` |
+| `scale`   | Bounding dimensions of resized image in px. Default is `2000x2000`      |
+
+[im]: https://imagemagick.org/script/command-line-options.php#interpolate
+[cl]: https://imagemagick.org/script/command-line-options.php#quality
+
+### Upload rules
+
+For each keyword there are two actions:
+
+| Action     | What it does                                                                         |
+| ---------- | ------------------------------------------------------------------------------------ |
+| `delete`   | When `true`, deletes the keyword from the file so that it does not exist on Flickr.  |
+| `album_id` | Flickr ID of the album that this image will be added to.                             |
+
+

commands/root.go

@@ -29,8 +29,11 @@ var rootCmd = &cobra.Command{
 	Short:   "Flickr command line tool",
 	Long: `A command line tool to work with Flickr and images.
 
-Initially, it supports uploading new images with automatic dates, albums,
-privacy and license.`,
+Rodeo uploads images to Flickr, applying keyword based rules to add the image
+to albums and also to delete keywords that you may not want to be published. It
+can also resize images for sharing on social media or in messages.
+`,
+
 	// Uncomment the following line if your bare application
 	// has an action associated with it:
 	//	Run: func(cmd *cobra.Command, args []string) { },