add README, start writing documentation

README.md

@@ -0,0 +1,48 @@
+# Static split parser
+
+A header only "csv" parser which is fast and versatile with modern c++ api. Requires compiler with c++17 support. 
+
+Conversion for numeric values taken from [oliver schönrock](https://gist.github.com/oschonrock/67fc870ba067ebf0f369897a9d52c2dd) .   
+Function traits taken from [qt-creator](https://code.woboq.org/qt5/qt-creator/src/libs/utils/functiontraits.h.html) .   
+
+Example, lets say we have a csv file containing students in the 
+following format <name,age,grade>:
+
+```
+James Bailey,65,2.5
+Brian S. Wolfe,40,11.9
+Nathan Fielder,37,Really good grades
+Bill (Heath) Gates,65,3.3
+```
+```
+#include <iostream>
+#include <ss/parser.hpp>
+
+int main() {
+    ss::parser p{"students.csv", ","};
+    if (!p.valid()) {
+        exit(exit_failure);
+    }
+
+    while (!p.eof()) {
+        auto [name, age, grade] = p.get_next<std::string, int, double>();
+
+        if (p.valid()) {
+            std::cout << name << ' ' << age << ' ' << grade << std::endl;
+        }
+    }
+
+    return 0;
+}
+```
+
+And if we execute the program we get the following output:
+
+```
+$ ./program
+James Bailey 65 2.5
+Brian S. Wolfe 40 11.9
+Bill (Heath) Gates 65 3.3
+```
+
+...

include/ss/extract.hpp

@@ -11,10 +11,6 @@
 
 namespace ss {
 
-// todo
-// taken from
-// https://gist.github.com/oschonrock/67fc870ba067ebf0f369897a9d52c2dd
-
 ////////////////
 // number converters
 ////////////////