Created Installation from source (markdown)

Installation-from-source.md

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+# Installation from source
+
+## Install build-dependencies
+
+## Debian/Ubuntu
+
+In order to build on Debian/Ubuntu make sure you install the following build-dependencies
+
+```
+$ sudo apt build-essential cmake ragel pkg-config libsqlite3-dev libpcap-dev
+```
+
+## Configure & build
+
+In order to configure with `cmake` first create and cd into a build directory:
+
+```
+$ mkdir build
+$ cd build
+```
+
+Then call `cmake` from inside the `build` directory:
+
+```
+$ cmake ../
+```
+
+Common options for Cmake are:
+
+* `-DBUILD_STATIC_LIBS=On/Off` Build static libraries
+* `-DBUILD_SHARED_LIBS=On/Off` Build shared libraries
+* `-DCMAKE_BUILD_TYPE=[Release|Debug|RelWithDebInfo|MinSizeRel]` Configure build type and determine optimizations and certain features, for examples, Fat runtimes are not compatible with Debug mode at the moment.
+
+And then you can run `make` in the same directory, if you have a multi-core system with `N` cores, running
+
+```
+$ make -j <N>
+```
+
+will speed up the process. If all goes well, you should have the vectorscan library