Update README.md

Author: julzerinos

README.md

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-# winforms-image-processor
+# Winforms Image Processing
+
+An application created in Winforms under C# for processing images. Allows applying various function and convolution filters among other functionalities.
+
+## Version specifications
+
+### Version v1.0
+
+The initial version is specified by the following requirements:
+
+* Loading of a selected image file and displaying it in the application window
+* Applying selected filters to the loaded image and displaying result beside
+or in place of original image
+* Combining multiple filters on top of each other
+* Saving result image to a file
+* Returning filtered image back to its original state without reloading the
+file
+* Implementation of following function filters - with fixed parameters easily
+modifiable from the source code:
+  * inversion,
+  * brightness correction,
+  * contrast enhancement,
+  * gamma correction.
+* Implementation of following convolution filters
+  * box blur,
+  * Gaussian blur
+  * sharpen,
+  * edge detection
+  * emboss
+  
+  Additionally, functionalities of convolution filters are extended by:
+  
+ * Separate area displaying rectangular grid with editable convolution filter
+kernel coefficients
+* Independent selection of numbers of kernel columns and rows. Values can
+be limited to an odd numbers from range [1, 9]
+* Editable field with filter divisor
+* Option to automatically compute divisor (sum of coefficients or 1 if the
+sum is 0)
+* Editable field with filter offset value
+* Selection of kernel anchor point, i.e. element of a grid which overlaps with
+currently processed pixel
+* Loading and editing existing filters, including predefined convolution filters specified in the common part
+* Saving created or modified filters in an application and applying them to
+the image