Updated some info and added reference file

Reference.md

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+# Fatures Description
+
+## List language elements
+- Literals
+- Variables
+  - Integers (signed & unsigned)
+  - Floating points
+  - Data (array type)
+  - Type (structure type)
+  - Pointers
+- Functions
+- Conditions
+- Repeat (loop)
+- Modules
+- Comments
+
+## Literals
+**Number literals** can be specified as decimal, hexadecimal, and binary numbers. Digits can be separated by an '_' but it cannot be the first or the last character (otherwise it will get interpreted as and identifier).
+
+```
+// Valid examples:
+1024
+1_024
+1.245
+
+1_000.
+
+0xffa
+0xffaa_42bb
+
+0b1101
+0b1010_0101
+
+// Invalid examples:
+_100
+1000_.100
+
+0x_fa
+
+0b10_
+_0b1101
+```
+
+## Functions
+
+## Conditions
+If-Else statements can be written on a single or multiple lines and are an expression, which allows for something like this:
+```
+isValid bool <- if count = 0: doForEmpty() else doForCount(count)
+```
+
+## Repeats
+C-style for, while, and do-while are all combined into a single `rep` loop. The format is `rep init, pre-condition, post-condition`. `init` allows to setup a counter, pre-condition is evaluated before and post after each loop. Each part is optional, but if you include post-condition, pre-condition must also be include. Some examples:
+```
+// infinite loop
+rep: doStuff()
+
+// do things ten times
+rep i s32 <- 0, i < 10:
+  doStuff(i)
+  i <- i + 1
+;
+
+// do things at least once
+rep i s32 <- 0, true, i < someValue:
+  doStuff(i)
+;
+```
+
+## Comments
+Like in C, comments can specified using either `\\` which will run until the end of the line or through `/* */` block. However, unlike C, the `/* bla bla /* bla */ */` comments can be also embeded inside each other.