Fix current errors in Markdown files

Also: add package-lock.json to gitignore
Remove prefix $ for commands in the manpage, hope people aren't angry
Add MD034 to markdownlint ignore (bare links, which are helpful for the
manpage)

.gitignore

@@ -1,3 +1,4 @@
 node_modules/
 sandboxrepo
 git-open.1
+package-lock.json

README.md

@@ -130,11 +130,12 @@ from which this plugin was forked.
 Please provide examples of the URLs you are parsing with each PR.
 
 You can run `git-open` in `echo` mode, which doesn't open your browser, but just prints the URL to stdout:
+
 ```sh
 env BROWSER='echo' ./git-open
 ```
 
-#### Testing:
+### Testing:
 
 You'll need to install [bats](https://github.com/sstephenson/bats#installing-bats-from-source), the Bash automated testing system. It's also available as `brew install bats`
 

git-open.1.md

@@ -26,25 +26,25 @@ git hosting services are supported.
 ## EXAMPLES
 
 ```sh
-$ git open
+git open
 ```
 
 It opens https://github.com/TRACKED_REMOTE_USER/CURRENT_REPO/
 
 ```sh
-$ git open someremote
+git open someremote
 ```
 
 It opens https://github.com/PROVIDED_REMOTE_USER/CURRENT_REPO/
 
 ```sh
-$ git open someremote somebranch
+git open someremote somebranch
 ```
 
 It opens https://github.com/PROVIDED_REMOTE_USER/CURRENT_REPO/tree/PROVIDED_BRANCH
 
 ```sh
-$ git open --issue
+git open --issue
 ```
 
 If branches use naming convention of `issues/#123`, it opens
@@ -72,7 +72,7 @@ To configure git-open you may need to set some `git config` options.
 You can use `--global` to set across all repos, instead of just the current repo.
 
 ```sh
-$ git config [--global] option value
+git config [--global] option value
 ```
 
 ### Configuring which remote to open 
@@ -106,6 +106,7 @@ git config [--global] open.[gitdomain].protocol [value]
 ```
 
 **Example**
+
 - Your git remote is at `ssh://git@git.internal.biz:7000/XXX/YYY.git`
 - Your hosted gitlab is `http://repo.intranet/subpath/XXX/YYY`
 

markdownlint.json

@@ -9,6 +9,7 @@
   "MD013": false,
   "MD026": false,
   "MD033": false,
+  "MD034": false,
   "MD036": false,
   "MD041": false
 }