Refactored the whole project

List of changes

+ Handling information about a tool has been improved a lot by providing a `HackingTool` class, which takes care of showing the options, running the selected option, executing the required commands
+ This class is designed with flexibililty and simplicity in mind, so adding a new tool is a lot easier, mention TITLE, DESCRIPTION, list of INSTALL_COMMANDS, RUN_COMMANDS and PROJECT_URL and there you go...

+ grouping all the `HackingTool`s is also made super simpler by providing a `HackingToolsCollection` class which groups the tools into their respective categories. Just add the instances of `HackingTool` classes to the TOOLS property of the `HackingToolsCollection`.

+ Refactored all the tools into separate files based on their categories.
+ Added a READM_template.md and generate_readme.py script to automatically generate Table of contents and the list of tools available automatically.
+ Now each tool in the README.md points to its project url if provided. This makes it easier to visit the project from the readme.

tools/reverse_engineering.py

@@ -0,0 +1,56 @@
+# coding=utf-8
+import subprocess
+
+from core import HackingTool
+from core import HackingToolsCollection
+
+
+class AndroGuard(HackingTool):
+    TITLE = "Androguard"
+    DESCRIPTION = "Androguard is a Reverse engineering, Malware and goodware " \
+                  "analysis of Android applications and more"
+    INSTALL_COMMANDS = ["sudo pip install -U androguard"]
+    PROJECT_URL = "https://github.com/androguard/androguard "
+
+    def __init__(self):
+        super(AndroGuard, self).__init__(runnable = False)
+
+
+class Apk2Gold(HackingTool):
+    TITLE = "Apk2Gold"
+    DESCRIPTION = "Apk2Gold is a CLI tool for decompiling Android apps to Java"
+    INSTALL_COMMANDS = [
+        "sudo git clone https://github.com/lxdvs/apk2gold.git",
+        "cd apk2gold;sudo bash make.sh"
+    ]
+    PROJECT_URL = "https://github.com/lxdvs/apk2gold "
+
+    def run(self):
+        uinput = input("Enter (.apk) File >> ")
+        subprocess.run(["sudo", "apk2gold", uinput])
+
+
+class Jadx(HackingTool):
+    TITLE = "JadX"
+    DESCRIPTION = "Jadx is Dex to Java decompiler.\n" \
+                  "[*] decompile Dalvik bytecode to java classes from APK, dex," \
+                  " aar and zip files\n" \
+                  "[*] decode AndroidManifest.xml and other resources from " \
+                  "resources.arsc"
+    INSTALL_COMMANDS = [
+        "sudo git clone https://github.com/skylot/jadx.git",
+        "cd jadx;./gradlew dist"
+    ]
+    PROJECT_URL = "https://github.com/skylot/jadx"
+
+    def __init__(self):
+        super(Jadx, self).__init__(runnable = False)
+
+
+class ReverseEngineeringTools(HackingToolsCollection):
+    TITLE = "Reverse engineering tools"
+    TOOLS = [
+        AndroGuard(),
+        Apk2Gold(),
+        Jadx()
+    ]