docs: add statusline indicator informations.

Also document newly added parsers by adding them in the readme.

README.md

@@ -135,6 +135,7 @@ Some of these features are :
   - [ ] Syntax based code folding
   - [x] Consistent syntax highlighting (the api is not quite stable yet)
   - [x] Cursor movement in node hierachy
+  - [x] Statusline indicator (`require'nvim-treesitter'.statusline(size)`)
 
 You can find the roadmap [here](https://github.com/nvim-treesitter/nvim-treesitter/projects/1).
 The roadmap and all features of this plugin are open to change, and any suggestion will be highly appreciated!
@@ -166,6 +167,13 @@ List of currently supported languages:
 - [ ] julia
 - [ ] php
 - [ ] bash
+- [ ] scala
+- [ ] haskell
+- [ ] toml
+- [ ] vue
+- [ ] elm
+- [ ] yaml
+- [ ] nix
 
 ## Troubleshooting
 Before doing anything run `:checkhealth nvim_treesitter`. This will help you find where the bug might come from.

doc/nvim-treesitter.txt

@@ -97,5 +97,16 @@ A list of languages can be found at |:TSInstallInfo|
 
 List modules state for the current session.
 
- vim:tw=78:ts=8:noet:ft=help:norl:
+==============================================================================
+FUNCTIONS~
+						   *nvim-treesitter-functions*
 
+|nvim_treesitter#statusline(size)|
+						*nvim_treesitter#statusline()*
+
+Returns a string describing the current position in the syntax tree. This
+could be used as a statusline indicator.
+Note: The `size` argument is optionnal. When specified, the string will not be
+      longer than `size`.
+
+ vim:tw=78:ts=8:noet:ft=help:norl:

doc/tags

@@ -7,5 +7,7 @@
 :TSModuleInfo	nvim-treesitter.txt	/*:TSModuleInfo*
 nvim-treesitter	nvim-treesitter.txt	/*nvim-treesitter*
 nvim-treesitter-commands	nvim-treesitter.txt	/*nvim-treesitter-commands*
+nvim-treesitter-functions	nvim-treesitter.txt	/*nvim-treesitter-functions*
 nvim-treesitter-intro	nvim-treesitter.txt	/*nvim-treesitter-intro*
 nvim-treesitter-quickstart	nvim-treesitter.txt	/*nvim-treesitter-quickstart*
+nvim_treesitter#statusline()	nvim-treesitter.txt	/*nvim_treesitter#statusline()*