Improved README

README

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-
-No-runtime-value-error-language
-
-A language wth a largely-python-like where there are no value errors. Can call null like a function
-
-
-
-Grammar:
-
-#comments are hashes
-# newlines are equivalent to semicolons for breaking up statements
-
-let a = 1.3; let b = "string literal"
-let c = 2
-
-if a < 3 then any(); number(); of(); exprs(); else whatever(); end
-
-while condition; do(); whatever(); let a = 3; a; end
-
-#function definition
-fn my_function(arg1, arg2); statements(); end
-
-
-Keywords:
-if, then, else, while, let, fn, end, null
-
-
-Refernece works:
-
-    Evaluation:
-    Understanding Computation
-
-    Parsing:
-
-    http://journal.stuffwithstuff.com/2011/03/19/pratt-parsers-expression-parsing-made-easy/
-
-
-    LLVM:
-    http://blog.ulysse.io/2016/07/03/llvm-getting-started.html

README.md

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+Schala
+======
+
+## The experimental programming language meta-interpreter
+
+Schala is a Rust-language framework written to make it easy to
+create and experiment with toy programming languages. It provides
+a common REPL, and a typeclass `ProgrammingLanguage` with methods
+for tokenizing text, parsing tokens, evaluating an abstract syntax tree,
+and other tasks that are common to all programming languages.
+
+Schala started out life as an experiment in writing a Javascript-like
+programming language that would never encounter any kind of runtime
+value error, but rather always return `null` under any kind of error
+condition. I had seen one too many Javascript `Uncaught TypeError:
+Cannot read property ___ of undefined` messages, and I was a bit frustrated.
+Plus I had always wanted to write a programming langauge from scratch,
+and Rust is a fun language to program in.
+
+Over time I became interested in playing around with other sorts
+of programming languages as well, and wanted to make the process
+as general as possible. I changed the name of the project to
+Schala, after the Princess of Zeal from *Chrono Trigger*, because I
+like classic JRPGs and because it sounds sort of like Scala, and I am
+continuing to work on the project as my time permits.
+
+### Reference works
+
+Here's a partial list of resources I've made use of in the process
+of learning how to write a programming language.
+
+#### Evaluation
+*Understanding Computation*, Tom Stuart, O'Reilly 2013
+
+#### Parsing
+http://journal.stuffwithstuff.com/2011/03/19/pratt-parsers-expression-parsing-made-easy/
+[Crafting Interpreters](http://www.craftinginterpreters.com/)
+
+#### LLVM
+http://blog.ulysse.io/2016/07/03/llvm-getting-started.html