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

tldr/btm

@@ -0,0 +1,30 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# btm
+
+> An alternative to `top`.
+> Aims to be lightweight, cross-platform and more graphical than `top`.
+> More information: <https://github.com/ClementTsang/bottom>.
+
+- Show the default layout (CPU, memory, temperatures, disk, network, and processes):
+
+`btm`
+
+- Enable basic mode, removing charts and condensing data (similar to `top`):
+
+`btm --basic`
+
+- Use big dots instead of small ones in charts:
+
+`btm --dot_marker`
+
+- Show also battery charge and health status:
+
+`btm --battery`
+
+- Refresh every 250 milliseconds and show the last 30 seconds in the charts:
+
+`btm --rate 250 --default_time_value 30000`