Add index files for all subdirectories

README.md

@@ -2,7 +2,7 @@
 
 # The *juice* Programming Language Documentation
 
-This repository contains the documentation of the *juice* programing language that can be viewed on its [website](https://juicelang.org/docs).
+This repository contains the documentation of the *juice* programming language that can be viewed on its [website](https://juicelang.org/docs).
 
 It is subdivided into the following categories:
 

compiler-documentation/index.md

@@ -0,0 +1,4 @@
+# The *juice* Programming Language Compiler Documentation
+
+The compiler documentation will eventually contain some information about the inner workings of the *juice* compiler. For example, you'll find an overview over the compiler pipeline and some more specific documents like a short description of how the type-checker works.  
+However, since there is still a lot of progress to be made before the compiler will be anywhere near production ready, this section of the documentation will remain empty for now.

language-guide/index.md

@@ -0,0 +1,4 @@
+# The *juice* Programming Language Guide
+
+In the future, the language guide will provide a simple and easy to follow intro for people new to the *juice* programming language. It will give a quick overview over most important programming concepts and how they are handled in *juice*.  
+For now, this part of the documentation remains empty, but it will become a high priority as soon as the language reaches a somewhat usable state.

stdlib-reference/index.md

@@ -0,0 +1,3 @@
+# The *juice* Standard Library Reference
+
+The complete API reference and documentation of the *juice* standard library will have its place here, as soon as it gets into the focus of the development. There isn't even any standard library available yet, so this part of the documentation stays empty for now.