cleanup tyre, add ocamlformat, update opam desc (#5)

* chore: cleanup ppx_tyre, we dont need it here. add ocamlformat

* update opam description

Author: zazedd

.ocamlformat

@@ -0,0 +1,13 @@
+break-infix-before-func=false
+break-infix=fit-or-vertical
+cases-exp-indent=2
+doc-comments=before
+exp-grouping=preserve
+leading-nested-match-parens=true
+let-and=sparse
+m=140
+max-indent=2
+parens-ite=true
+parens-tuple=multi-line-only
+parse-docstrings=false
+type-decl=sparse

.travis.sh

@@ -0,0 +1,12 @@
+(library
+ (wrapped false)
+ (name ppx_regexp_lib)
+ (public_name ppx_regexp_extended.lib)
+ (modules regexp regexp_types mik_parser mik_lexer)
+ (libraries ppxlib re re.perl))
+
+(menhir
+ (modules mik_parser))
+
+(ocamllex
+ (modules mik_lexer))