chore(readme): Update readme and conanfile.py

Author: Vlad Gramuzov

README.md

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+[ ![Download](https://api.bintray.com/packages/techpaw/SolutionsForWeb/FastCgi%3Apandomic/images/download.svg) ](https://bintray.com/techpaw/SolutionsForWeb/FastCgi%3Apandomic/_latestVersion)
+
+** NOTE that this lib is still under development**
+
+## About
+Yet another FastCgi protocol implementation.
+
+## Installation
+* Install [conan](https://docs.conan.io/en/latest/installation.html)
+* Clone the repo
+* Add `https://api.bintray.com/conan/bincrafters/public-conan`
+to the repos list (`conan remote add bincrafters https://api.bintray.com/conan/bincrafters/public-conan`
+* Add `https://api.bintray.com/conan/techpaw/SolutionsForWeb`
+to the repos list (`conan remote add techpaw/SolutionsForWeb https://api.bintray.com/conan/techpaw/SolutionsForWeb`)
+* Add `FastCgi/0.1@pandomic/experimental` to your `conanfile.txt`
+* Run `conan install . --build=missing`
+* Include necessary headers `#include <fastcgi/server.hpp>`
+* That's it (ideally)

conanfile.py

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+from conans import ConanFile, CMake, tools
+
+
+class FastCgiConan(ConanFile):
+    name = "FastCgi"
+    version = "0.1"
+    license = "MIT"
+    url = "https://github.com/Techpaw/FastCGI"
+    description = "FastCgi implementation"
+    settings = "os", "compiler", "build_type", "arch"
+    options = {"shared": [True, False]}
+    default_options = "shared=True"
+    generators = "cmake"
+    exports_sources = "include/*"
+    requires = "Boost.Asio/1.65.1@bincrafters/stable", \
+               "Boost.Stacktrace/1.65.1@bincrafters/stable"
+
+    def source(self):
+        self.run("git clone https://github.com/Techpaw/FastCGI.git fastcgi")
+        self.run("cd fastcgi && git checkout stable")
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure(source_folder="fastcgi")
+        cmake.build()
+
+    def package(self):
+        self.copy("*.hpp", dst="include", src="fastcgi/include")
+        self.copy("*.a", dst="lib", keep_path=False)
+
+    def package_info(self):
+        self.cpp_info.libs = ["fastcgi"]