Improve CLI docs (#1404)

* Improve CLI docs

* Fixed all the typos (hopefully).
* Improved the bad English. This encompasses grammar, vocabulary, generally awkward phrases, etc. The result is easier to read and understand, and in some cases shorter.
* Made some formatting improvements. This includes making formatting more consistent, but I changed some of it to be better, at least in my opinion.
* Removed certain unnecessities, the biggest one being the commands documentation. I think this is unnecessary because of the `dx --help` command. It also needs to be updated every time a command gets added/updated/removed. It doesn't really provide much extra insight than `dx --help`.
* Improved plugin documentation. I added a warning to ignore all of it, which is ironic, but the fact is that plugins are probably going to change. But by the time I learned that, I already made some changes to the plugin docs. This includes a better guide on how to get started (although still bad since the plugin system is too messy), and some general changes like the aforementioned English or formatting.
* And more. I can't list it all, but I didn't use any destructive changes. The content might be reformatted (to be shorter or easier to understand), but the meaning isn't lost.

* Fix grammar in packages/cli/docs/src/creating.md

Co-authored-by: Evan Simkowitz <esimkowitz@users.noreply.github.com>

* Update README.md

* Change config example

---------

Co-authored-by: Evan Simkowitz <esimkowitz@users.noreply.github.com>

packages/cli/docs/src/installation.md

@@ -1,22 +1,23 @@
 # Installation
 
-Choose any one of the methods below to install the Dioxus CLI:
+## Install the latest development build through git
 
-## Install from latest git version
-
-To get the most up to date bug fixes and features of the Dioxus CLI, you can install the development version from git.
+To get the latest bug fixes and features, you can install the development version from git.
 
 ```
 cargo install --git https://github.com/Dioxuslabs/cli
 ```
 
-This will automatically download `Dioxus-CLI` source from github master branch,
+This will download `Dioxus-CLI` source from GitHub master branch,
 and install it in Cargo's global binary directory (`~/.cargo/bin/` by default).
 
-## Install from `crates.io` version
+## Install stable through `crates.io`
 
-The published version of the Dioxus CLI is updated less often, but should be more stable than the git version of the Dioxus CLI.
+The published version of the Dioxus CLI is updated less often, but is more stable than the git version.
 
 ```
 cargo install dioxus-cli
 ```
+
+Run `dx --help` for a list of all the available commands.
+Furthermore, you can run `dx <COMMAND> --help` to get help with a specific command.