change bart install path (#145)

The recommended location for the spin binary is /usr/local/bin. it seems like bart should be installed in the same location. I think /usr/bin is reserved for system files.

Signed-off-by: Luke Berndt <lukekb@gmail.com>

docs/content/quickstart.md

@@ -57,7 +57,7 @@ Creating content is made easy with the Bartholomew Command Line Interface (CLI)
 
 For the `bart` CLI, there are two options:
 - download the latest `bart` binary [release](https://github.com/fermyon/bartholomew/releases/), or
-- clone and build `bart` from source (requires Rust), using the following commands (NOTE: `target/release/bart` will need to be installed to a user executable directory such as `/usr/bin/` to be run when built this way.):
+- clone and build `bart` from source (requires Rust), using the following commands (NOTE: `target/release/bart` will need to be installed to a user executable directory such as `/usr/local/bin/` to be run when built this way.):
 
 ```bash
 $ git clone https://github.com/fermyon/bartholomew.git
@@ -115,4 +115,4 @@ Running the `spin up` command from above (again) will render the post content at
 
 ![Post content rendered by Bartholomew based on the blog template](../static/image/docs/bart-new-post.png)
 
-Next, let's explore how to [build custom templates for our new website](./templates.md).
+Next, let's explore how to [build custom templates for our new website](./templates.md).