Move pages under tldr, lint run.sh, update docs

tldr/shards

@@ -0,0 +1,29 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# shards
+
+> Dependency management tool for the Crystal language.
+> More information: <https://crystal-lang.org/reference/the_shards_command>.
+
+- Create a skeleton `shard.yml` file:
+
+`shards init`
+
+- Install dependencies from a `shard.yml` file:
+
+`shards install`
+
+- Update all dependencies:
+
+`shards update`
+
+- List all installed dependencies:
+
+`shards list`
+
+- Display version of dependency:
+
+`shards version {{path/to/dependency_directory}}`